diff --git a/src/musrFT.cpp b/src/musrFT.cpp
index 90769921..e10476e8 100644
--- a/src/musrFT.cpp
+++ b/src/musrFT.cpp
@@ -528,13 +528,13 @@ Int_t musrFT_parse_options(Int_t argc, Char_t *argv[], musrFT_startup_param &sta
       startupParam.lifetimecorrection = fudge.Atof();
     } else if (tstr.BeginsWith("--useDKS")) {
       if (i+1 >= argc) { // something is wrong since there needs to be an argument here
-        cerr << std::endl << ">> musrFT **ERROR** found option --useDKS without argument!" << std::endl;
+        std::cerr << std::endl << ">> musrFT **ERROR** found option --useDKS without argument!" << std::endl;
         return 2;
       }
       ++i;
       TString tt(argv[i]);
       if (tt.CompareTo("yes", TString::kIgnoreCase) && tt.CompareTo("no", TString::kIgnoreCase)) {
-        cerr << std::endl << ">> musrFT **ERROR** found option --useDKS with a <flag> which is not yes/no '" << tt << "'." << std::endl;
+        std::cerr << std::endl << ">> musrFT **ERROR** found option --useDKS with a <flag> which is not yes/no '" << tt << "'." << std::endl;
         return 2;
       }
       if (!tt.CompareTo("yes", TString::kIgnoreCase))
@@ -1433,9 +1433,9 @@ Int_t main(Int_t argc, Char_t *argv[])
   if (startupParam.useDKS == MFT_DKS)
     fftw_flag = false;
   if (fftw_flag)
-    cout << "info> will use FFTW" << std::endl;
+    std::cout << "info> will use FFTW" << std::endl;
   else
-    cout << "info> will use DKS" << std::endl;
+    std::cout << "info> will use DKS" << std::endl;
   for (UInt_t i=0; i<fourier.size(); i++) {
     fourier[i] = new PFourier(histo[i], unitTag, 0.0, 0.0, true, startupParam.fourierPower, fftw_flag);
   }