diff --git a/configure.ac b/configure.ac
index a37f17fd..ef7ec0cb 100644
--- a/configure.ac
+++ b/configure.ac
@@ -731,6 +731,7 @@ LOCAL_LIB_LDFLAGS=
 case "$host" in
   *-*-cygwin)
     ARCH=CYGWIN
+    AC_DEFINE([_WIN32GCC], [1], [Define to 1 if host system is Cygwin])
     LOCAL_BIN_CXXFLAGS="${LOCAL_BIN_CXXFLAGS}"
     LOCAL_LIB_CXXFLAGS="${LOCAL_BIN_CXXFLAGS} -D_DLL"
     LOCAL_PSIBIN_LIB_CXXFLAGS="${LOCAL_LIB_CXXFLAGS} -D_WIN32GCC"
diff --git a/src/external/libFitPofB/classes/TBulkTriVortexFieldCalc.cpp b/src/external/libFitPofB/classes/TBulkTriVortexFieldCalc.cpp
index a348acb1..bff8fb47 100644
--- a/src/external/libFitPofB/classes/TBulkTriVortexFieldCalc.cpp
+++ b/src/external/libFitPofB/classes/TBulkTriVortexFieldCalc.cpp
@@ -135,16 +135,12 @@ TBulkTriVortexLondonFieldCalc::TBulkTriVortexLondonFieldCalc(const string& wisdo
   fParam.resize(3);
   fGridExists = false;
 
-#ifdef HAVE_LIBFFTW3_THREADS
+#if !defined(_WIN32GCC) && defined(HAVE_LIBFFTW3_THREADS) && defined(HAVE_GOMP)
   int init_threads(fftw_init_threads());
   if (init_threads) {
-#ifdef HAVE_GOMP
     fftw_plan_with_nthreads(omp_get_num_procs());
-#else
-    fftw_plan_with_nthreads(2);
-#endif /* HAVE_GOMP */
   }
-#endif /* HAVE_LIBFFTW3_THREADS */
+#endif
 
   fFFTin = new fftw_complex[(fSteps/2 + 1) * fSteps];
   fFFTout = new double[fSteps*fSteps];
@@ -318,16 +314,12 @@ TBulkSqVortexLondonFieldCalc::TBulkSqVortexLondonFieldCalc(const string& wisdom,
   fParam.resize(3);
   fGridExists = false;
 
-#ifdef HAVE_LIBFFTW3_THREADS
+#if !defined(_WIN32GCC) && defined(HAVE_LIBFFTW3_THREADS) && defined(HAVE_GOMP)
   int init_threads(fftw_init_threads());
   if (init_threads) {
-#ifdef HAVE_GOMP
     fftw_plan_with_nthreads(omp_get_num_procs());
-#else
-    fftw_plan_with_nthreads(2);
-#endif /* HAVE_GOMP */
   }
-#endif /* HAVE_LIBFFTW3_THREADS */
+#endif
 
   fFFTin = new fftw_complex[(fSteps/2 + 1) * fSteps];
   fFFTout = new double[fSteps*fSteps];
@@ -469,16 +461,12 @@ TBulkTriVortexMLFieldCalc::TBulkTriVortexMLFieldCalc(const string& wisdom, const
   fParam.resize(3);
   fGridExists = false;
 
-#ifdef HAVE_LIBFFTW3_THREADS
+#if !defined(_WIN32GCC) && defined(HAVE_LIBFFTW3_THREADS) && defined(HAVE_GOMP)
   int init_threads(fftw_init_threads());
   if (init_threads) {
-#ifdef HAVE_GOMP
     fftw_plan_with_nthreads(omp_get_num_procs());
-#else
-    fftw_plan_with_nthreads(2);
-#endif /* HAVE_GOMP */
   }
-#endif /* HAVE_LIBFFTW3_THREADS */
+#endif
 
   fFFTin = new fftw_complex[(fSteps/2 + 1) * fSteps];
   fFFTout = new double[fSteps*fSteps];
@@ -669,16 +657,12 @@ TBulkTriVortexAGLFieldCalc::TBulkTriVortexAGLFieldCalc(const string& wisdom, con
   fParam.resize(3);
   fGridExists = false;
 
-#ifdef HAVE_LIBFFTW3_THREADS
+#if !defined(_WIN32GCC) && defined(HAVE_LIBFFTW3_THREADS) && defined(HAVE_GOMP)
   int init_threads(fftw_init_threads());
   if (init_threads) {
-#ifdef HAVE_GOMP
     fftw_plan_with_nthreads(omp_get_num_procs());
-#else
-    fftw_plan_with_nthreads(2);
-#endif /* HAVE_GOMP */
   }
-#endif /* HAVE_LIBFFTW3_THREADS */
+#endif
 
   fFFTin = new fftw_complex[(fSteps/2 + 1) * fSteps];
   fFFTout = new double[fSteps*fSteps];
@@ -878,16 +862,12 @@ TBulkTriVortexAGLIIFieldCalc::TBulkTriVortexAGLIIFieldCalc(const string& wisdom,
   fParam.resize(3);
   fGridExists = false;
 
-#ifdef HAVE_LIBFFTW3_THREADS
+#if !defined(_WIN32GCC) && defined(HAVE_LIBFFTW3_THREADS) && defined(HAVE_GOMP)
   int init_threads(fftw_init_threads());
   if (init_threads) {
-#ifdef HAVE_GOMP
     fftw_plan_with_nthreads(omp_get_num_procs());
-#else
-    fftw_plan_with_nthreads(2);
-#endif /* HAVE_GOMP */
   }
-#endif /* HAVE_LIBFFTW3_THREADS */
+#endif
 
   fFFTin = new fftw_complex[(fSteps/2 + 1) * fSteps];
   fFFTout = new double[fSteps*fSteps];
@@ -1100,16 +1080,12 @@ TBulkTriVortexNGLFieldCalc::TBulkTriVortexNGLFieldCalc(const string& wisdom, con
   fParam.resize(3);
   fGridExists = false;
 
-#ifdef HAVE_LIBFFTW3_THREADS
+#if !defined(_WIN32GCC) && defined(HAVE_LIBFFTW3_THREADS) && defined(HAVE_GOMP)
   int init_threads(fftw_init_threads());
   if (init_threads) {
-#ifdef HAVE_GOMP
     fftw_plan_with_nthreads(omp_get_num_procs());
-#else
-    fftw_plan_with_nthreads(2);
-#endif /* HAVE_GOMP */
   }
-#endif /* HAVE_LIBFFTW3_THREADS */
+#endif
 
   const unsigned int stepsSq(fSteps*fSteps);
 
@@ -2374,16 +2350,12 @@ TBulkAnisotropicTriVortexLondonFieldCalc::TBulkAnisotropicTriVortexLondonFieldCa
   fParam.resize(3);
   fGridExists = false;
 
-#ifdef HAVE_LIBFFTW3_THREADS
+#if !defined(_WIN32GCC) && defined(HAVE_LIBFFTW3_THREADS) && defined(HAVE_GOMP)
   int init_threads(fftw_init_threads());
   if (init_threads) {
-#ifdef HAVE_GOMP
     fftw_plan_with_nthreads(omp_get_num_procs());
-#else
-    fftw_plan_with_nthreads(2);
-#endif /* HAVE_GOMP */
   }
-#endif /* HAVE_LIBFFTW3_THREADS */
+#endif
 
   fFFTin = new fftw_complex[(fSteps/2 + 1) * fSteps];
   fFFTout = new double[fSteps*fSteps];
@@ -2595,16 +2567,12 @@ TBulkAnisotropicTriVortexMLFieldCalc::TBulkAnisotropicTriVortexMLFieldCalc(const
   fParam.resize(3);
   fGridExists = false;
 
-#ifdef HAVE_LIBFFTW3_THREADS
+#if !defined(_WIN32GCC) && defined(HAVE_LIBFFTW3_THREADS) && defined(HAVE_GOMP)
   int init_threads(fftw_init_threads());
   if (init_threads) {
-#ifdef HAVE_GOMP
     fftw_plan_with_nthreads(omp_get_num_procs());
-#else
-    fftw_plan_with_nthreads(2);
-#endif /* HAVE_GOMP */
   }
-#endif /* HAVE_LIBFFTW3_THREADS */
+#endif
 
   fFFTin = new fftw_complex[(fSteps/2 + 1) * fSteps];
   fFFTout = new double[fSteps*fSteps];
@@ -2798,16 +2766,12 @@ TBulkAnisotropicTriVortexAGLFieldCalc::TBulkAnisotropicTriVortexAGLFieldCalc(con
   fParam.resize(3);
   fGridExists = false;
 
-#ifdef HAVE_LIBFFTW3_THREADS
+#if !defined(_WIN32GCC) && defined(HAVE_LIBFFTW3_THREADS) && defined(HAVE_GOMP)
   int init_threads(fftw_init_threads());
   if (init_threads) {
-#ifdef HAVE_GOMP
     fftw_plan_with_nthreads(omp_get_num_procs());
-#else
-    fftw_plan_with_nthreads(2);
-#endif /* HAVE_GOMP */
   }
-#endif /* HAVE_LIBFFTW3_THREADS */
+#endif
 
   fFFTin = new fftw_complex[(fSteps/2 + 1) * fSteps];
   fFFTout = new double[fSteps*fSteps];
diff --git a/src/external/libFitPofB/classes/TFilmTriVortexFieldCalc.cpp b/src/external/libFitPofB/classes/TFilmTriVortexFieldCalc.cpp
index b97aa37f..973490a5 100644
--- a/src/external/libFitPofB/classes/TFilmTriVortexFieldCalc.cpp
+++ b/src/external/libFitPofB/classes/TFilmTriVortexFieldCalc.cpp
@@ -155,16 +155,12 @@ TFilmTriVortexNGLFieldCalc::TFilmTriVortexNGLFieldCalc(const string& wisdom, con
   fParam.resize(3);
   fGridExists = false;
 
-#ifdef HAVE_LIBFFTW3_THREADS
+#if !defined(_WIN32GCC) && defined(HAVE_LIBFFTW3F_THREADS) && defined(HAVE_GOMP)
   int init_threads(fftwf_init_threads());
   if (init_threads) {
-#ifdef HAVE_GOMP
     fftwf_plan_with_nthreads(omp_get_num_procs());
-#else
-    fftwf_plan_with_nthreads(2);
-#endif /* HAVE_GOMP */
   }
-#endif /* HAVE_LIBFFTW3_THREADS */
+#endif
 
   const unsigned int stepsSqStZ(fSteps*fSteps*fStepsZ);
 
diff --git a/src/external/libFitPofB/classes/TPofTCalc.cpp b/src/external/libFitPofB/classes/TPofTCalc.cpp
index fe11bb1b..768cda83 100644
--- a/src/external/libFitPofB/classes/TPofTCalc.cpp
+++ b/src/external/libFitPofB/classes/TPofTCalc.cpp
@@ -70,19 +70,13 @@
 
 TPofTCalc::TPofTCalc (const TPofBCalc *PofB, const string &wisdom, const vector<double> &par) : fWisdom(wisdom) {
 
-
-#ifdef HAVE_LIBFFTW3_THREADS
+#if !defined(_WIN32GCC) && defined(HAVE_LIBFFTW3_THREADS) && defined(HAVE_GOMP)
   int init_threads(fftw_init_threads());
   if (!init_threads)
     cout << "TPofTCalc::TPofTCalc: Couldn't initialize multiple FFTW-threads ..." << endl;
-  else {
-#ifdef HAVE_GOMP
+  else
     fftw_plan_with_nthreads(omp_get_num_procs());
-#else
-    fftw_plan_with_nthreads(2);
-#endif /* HAVE_GOMP */
-  }
-#endif /* HAVE_LIBFFTW3_THREADS */
+#endif
 
   fNFFT = static_cast<int>(1.0/(gBar*par[1]*par[2]));
   if (fNFFT % 2) {
diff --git a/src/external/libLFRelaxation/TLFRelaxation.cpp b/src/external/libLFRelaxation/TLFRelaxation.cpp
index 00c6bc65..9ef20c6b 100644
--- a/src/external/libLFRelaxation/TLFRelaxation.cpp
+++ b/src/external/libLFRelaxation/TLFRelaxation.cpp
@@ -187,18 +187,13 @@ double TLFStatExpKT::operator()(double t, const vector<double> &par) const {
  */
 TLFDynGssKT::TLFDynGssKT() : fCalcNeeded(true), fFirstCall(true), fCounter(0) {
 
-#ifdef HAVE_LIBFFTW3F_THREADS
+#if !defined(_WIN32GCC) && defined(HAVE_LIBFFTW3F_THREADS) && defined(HAVE_GOMP)
   int init_threads(fftwf_init_threads());
   if (!init_threads)
     cout << "TLFDynGssKT::TLFDynGssKT: Couldn't initialize multiple FFTW-threads ..." << endl;
-  else {
-#ifdef HAVE_GOMP
+  else
     fftwf_plan_with_nthreads(omp_get_num_procs());
-#else
-    fftwf_plan_with_nthreads(1);
-#endif /* HAVE_GOMP */
-  }
-#endif /* HAVE_LIBFFTW3F_THREADS */
+#endif
 
   // read startup file
   string startup_path_name("BMW_startup.xml");
@@ -514,18 +509,13 @@ double TLFDynSG::operator()(double t, const vector<double> &par) const {
  */
 TLFDynExpKT::TLFDynExpKT() : fCalcNeeded(true), fFirstCall(true), fCounter(0), fL1(0.0), fL2(0.0) {
 
-#ifdef HAVE_LIBFFTW3F_THREADS
+#if !defined(_WIN32GCC) && defined(HAVE_LIBFFTW3F_THREADS) && defined(HAVE_GOMP)
   int init_threads(fftwf_init_threads());
   if (!init_threads)
     cout << "TLFDynExpKT::TLFDynExpKT: Couldn't initialize multiple FFTW-threads ..." << endl;
-  else {
-#ifdef HAVE_GOMP
+  else
     fftwf_plan_with_nthreads(omp_get_num_procs());
-#else
-    fftwf_plan_with_nthreads(1);
-#endif /* HAVE_GOMP */
-  }
-#endif /* HAVE_LIBFFTW3F_THREADS */
+#endif
 
   // read startup file
   string startup_path_name("BMW_startup.xml");
diff --git a/src/musredit/PGetAsymmetryRunBlockDialog.cpp b/src/musredit/PGetAsymmetryRunBlockDialog.cpp
index 70036ae6..4153afae 100644
--- a/src/musredit/PGetAsymmetryRunBlockDialog.cpp
+++ b/src/musredit/PGetAsymmetryRunBlockDialog.cpp
@@ -286,8 +286,12 @@ void PGetAsymmetryRunBlockDialog::helpContent()
   if (fHelpUrl.isEmpty()) {
     QMessageBox::information(this, "**INFO**", "Will eventually show a help window");
   } else {
+    #ifdef _WIN32GCC
+    QMessageBox::information(this, "**INFO**", "If a newer Qt version was available, a help window would be shown!");
+    #else
     PHelp *help = new PHelp(fHelpUrl);
     help->show();
+    #endif // _WIN32GCC
   }
 }
 
diff --git a/src/musredit/PGetDefaultDialog.cpp b/src/musredit/PGetDefaultDialog.cpp
index d15ccc8b..1764afb4 100644
--- a/src/musredit/PGetDefaultDialog.cpp
+++ b/src/musredit/PGetDefaultDialog.cpp
@@ -107,9 +107,12 @@ void PGetDefaultDialog::setFileFormat(const QString &str)
  */
 void PGetDefaultDialog::helpContent()
 {
+  #ifdef _WIN32GCC
+  QMessageBox::information(this, "**INFO**", "If a newer Qt version was available, a help window would be shown!");
+  #else
   PHelp *help = new PHelp(fHelpUrl);
-
   help->show();
+  #endif // _WIN32GCC
 }
 
 //---------------------------------------------------------------------------
diff --git a/src/musredit/PGetFourierBlockDialog.cpp b/src/musredit/PGetFourierBlockDialog.cpp
index 6dc5d068..93fc4d9c 100644
--- a/src/musredit/PGetFourierBlockDialog.cpp
+++ b/src/musredit/PGetFourierBlockDialog.cpp
@@ -134,8 +134,12 @@ void PGetFourierBlockDialog::helpContent()
   if (fHelpUrl.isEmpty()) {
     QMessageBox::information(this, "**INFO**", "Will eventually show a help window");
   } else {
+    #ifdef _WIN32GCC
+    QMessageBox::information(this, "**INFO**", "If a newer Qt version was available, a help window would be shown!");
+    #else
     PHelp *help = new PHelp(fHelpUrl);
     help->show();
+    #endif // _WIN32GCC
   }
 }
 
diff --git a/src/musredit/PGetFunctionsBlockDialog.cpp b/src/musredit/PGetFunctionsBlockDialog.cpp
index 71777b9c..1561b1ec 100644
--- a/src/musredit/PGetFunctionsBlockDialog.cpp
+++ b/src/musredit/PGetFunctionsBlockDialog.cpp
@@ -110,8 +110,12 @@ void PGetFunctionsBlockDialog::helpContent()
   if (fHelpUrl.isEmpty()) {
     QMessageBox::information(this, "**INFO**", "Will eventually show a help window");
   } else {
+    #ifdef _WIN32GCC
+    QMessageBox::information(this, "**INFO**", "If a newer Qt version was available, a help window would be shown!");
+    #else
     PHelp *help = new PHelp(fHelpUrl);
     help->show();
+    #endif // _WIN32GCC
   }
 }
 
diff --git a/src/musredit/PGetNonMusrRunBlockDialog.cpp b/src/musredit/PGetNonMusrRunBlockDialog.cpp
index 59b2abdc..39e9e3cf 100644
--- a/src/musredit/PGetNonMusrRunBlockDialog.cpp
+++ b/src/musredit/PGetNonMusrRunBlockDialog.cpp
@@ -158,8 +158,12 @@ void PGetNonMusrRunBlockDialog::helpContent()
   if (fHelpUrl.isEmpty()) {
     QMessageBox::information(this, "**INFO**", "Will eventually show a help window");
   } else {
+    #ifdef _WIN32GCC
+    QMessageBox::information(this, "**INFO**", "If a newer Qt version was available, a help window would be shown!");
+    #else
     PHelp *help = new PHelp(fHelpUrl);
     help->show();
+    #endif // _WIN32GCC
   }
 }
 
diff --git a/src/musredit/PGetParameterBlockDialog.cpp b/src/musredit/PGetParameterBlockDialog.cpp
index 96063fb3..68352ed5 100644
--- a/src/musredit/PGetParameterBlockDialog.cpp
+++ b/src/musredit/PGetParameterBlockDialog.cpp
@@ -221,8 +221,12 @@ void PGetParameterBlockDialog::helpContent()
   if (fHelpUrl.isEmpty()) {
     QMessageBox::information(this, "**INFO**", "Will eventually show a help window");
   } else {
+    #ifdef _WIN32GCC
+    QMessageBox::information(this, "**INFO**", "If a newer Qt version was available, a help window would be shown!");
+    #else
     PHelp *help = new PHelp(fHelpUrl);
     help->show();
+    #endif // _WIN32GCC
   }
 }
 
diff --git a/src/musredit/PGetPlotBlockDialog.cpp b/src/musredit/PGetPlotBlockDialog.cpp
index 37705d51..d2f1bc03 100644
--- a/src/musredit/PGetPlotBlockDialog.cpp
+++ b/src/musredit/PGetPlotBlockDialog.cpp
@@ -162,8 +162,12 @@ void PGetPlotBlockDialog::helpContent()
   if (fHelpUrl.isEmpty()) {
     QMessageBox::information(this, "**INFO**", "Will eventually show a help window");
   } else {
+    #ifdef _WIN32GCC
+    QMessageBox::information(this, "**INFO**", "If a newer Qt version was available, a help window would be shown!");
+    #else
     PHelp *help = new PHelp(fHelpUrl);
     help->show();
+    #endif // _WIN32GCC
   }
 }
 
diff --git a/src/musredit/PGetSingleHistoRunBlockDialog.cpp b/src/musredit/PGetSingleHistoRunBlockDialog.cpp
index 176d769b..ac5a8d98 100644
--- a/src/musredit/PGetSingleHistoRunBlockDialog.cpp
+++ b/src/musredit/PGetSingleHistoRunBlockDialog.cpp
@@ -284,8 +284,12 @@ void PGetSingleHistoRunBlockDialog::helpContent()
   if (fHelpUrl.isEmpty()) {
     QMessageBox::information(this, "**INFO**", "Will eventually show a help window");
   } else {
+    #ifdef _WIN32GCC
+    QMessageBox::information(this, "**INFO**", "If a newer Qt version was available, a help window would be shown!");
+    #else
     PHelp *help = new PHelp(fHelpUrl);
     help->show();
+    #endif // _WIN32GCC
   }
 }
 
diff --git a/src/musredit/PGetTheoryBlockDialog.cpp b/src/musredit/PGetTheoryBlockDialog.cpp
index dcb9ba4c..fcf4673c 100644
--- a/src/musredit/PGetTheoryBlockDialog.cpp
+++ b/src/musredit/PGetTheoryBlockDialog.cpp
@@ -128,8 +128,12 @@ void PGetTheoryBlockDialog::helpContent()
   if (fHelpUrl.isEmpty()) {
     QMessageBox::information(this, "**INFO**", "Will eventually show a help window");
   } else {
+    #ifdef _WIN32GCC
+    QMessageBox::information(this, "**INFO**", "If a newer Qt version was available, a help window would be shown!");
+    #else
     PHelp *help = new PHelp(fHelpUrl);
     help->show();
+    #endif // _WIN32GCC
   }
 }
 
diff --git a/src/musredit/PGetTitleBlockDialog.cpp b/src/musredit/PGetTitleBlockDialog.cpp
index 6cca2ed2..96ecb12c 100644
--- a/src/musredit/PGetTitleBlockDialog.cpp
+++ b/src/musredit/PGetTitleBlockDialog.cpp
@@ -56,8 +56,12 @@ void PGetTitleBlockDialog::helpContent()
   if (fHelpUrl.isEmpty()) {
     QMessageBox::information(this, "**INFO**", "Will eventually show a help window");
   } else {
+    #ifdef _WIN32GCC
+    QMessageBox::information(this, "**INFO**", "If a newer Qt version was available, a help window would be shown!");
+    #else
     PHelp *help = new PHelp(fHelpUrl);
     help->show();
+    #endif // _WIN32GCC
   }
 }
 
diff --git a/src/musredit/PHelp.cpp b/src/musredit/PHelp.cpp
index a63ab6e0..9b1894e1 100644
--- a/src/musredit/PHelp.cpp
+++ b/src/musredit/PHelp.cpp
@@ -44,6 +44,7 @@
  */
 PHelp::PHelp(const QString &url)
 {
+  #ifndef _WIN32GCC
   fProgress = 0;
 
   QNetworkProxyFactory::setUseSystemConfiguration(true);
@@ -71,6 +72,7 @@ PHelp::PHelp(const QString &url)
 
   setCentralWidget(fView);
   setUnifiedTitleAndToolBarOnMac(true);
+  #endif // _WIN32GCC
 }
 
 //---------------------------------------------------------------------------
diff --git a/src/musredit/PHelp.h b/src/musredit/PHelp.h
index fb2fbc8a..23bee3bd 100644
--- a/src/musredit/PHelp.h
+++ b/src/musredit/PHelp.h
@@ -64,6 +64,7 @@ class PHelp : public QMainWindow
     QWebView *fView; ///< web viewer
     QLineEdit *fLocationEdit; ///< url address line edit
     int fProgress; ///< progress value (0-100) while loading an url
+
 };
 
 #endif // _PHELP_H_
diff --git a/src/musredit/PMsr2DataDialog.cpp b/src/musredit/PMsr2DataDialog.cpp
index 9fc4e08b..7c890ca0 100644
--- a/src/musredit/PMsr2DataDialog.cpp
+++ b/src/musredit/PMsr2DataDialog.cpp
@@ -285,8 +285,12 @@ void PMsr2DataDialog::helpContent()
     if (fHelpUrl.isEmpty()) {
       QMessageBox::information(this, "**INFO**", "Will eventually show a help window");
     } else {
+      #ifdef _WIN32GCC
+      QMessageBox::information(this, "**INFO**", "If a newer Qt version was available, a help window would be shown!");
+      #else
       PHelp *help = new PHelp(fHelpUrl);
       help->show();
+      #endif // _WIN32GCC
     }
 }
 
diff --git a/src/musredit/PTextEdit.cpp b/src/musredit/PTextEdit.cpp
index 084e650c..aafb520c 100644
--- a/src/musredit/PTextEdit.cpp
+++ b/src/musredit/PTextEdit.cpp
@@ -2198,9 +2198,12 @@ void PTextEdit::musrSwapMsrMlog()
  */
 void PTextEdit::helpContents()
 {
+  #ifdef _WIN32GCC
+  QMessageBox::information(this, "**INFO**", "If a newer Qt version was available, a help window would be shown!");
+  #else
   PHelp *help = new PHelp(fAdmin->getHelpUrl("main"));
-
   help->show();
+  #endif // _WIN32GCC
 }
 
 //----------------------------------------------------------------------------------------------------
diff --git a/src/musredit/musredit.pro b/src/musredit/musredit.pro
index bc9a295d..f2999267 100644
--- a/src/musredit/musredit.pro
+++ b/src/musredit/musredit.pro
@@ -13,6 +13,7 @@ exists ( /opt/fontconfig-2.8.0/lib/libfontconfig.so ) {
 }
 
 exists( /usr/bin/cygwin1.dll ) {
+      QMAKE_CXXFLAGS += -D_WIN32GCC
       QMAKE_LFLAGS_SHAPP = -Wl,--enable-auto-import
 }