diff --git a/src/musrFT.cpp b/src/musrFT.cpp
index e9198204..a2d50364 100644
--- a/src/musrFT.cpp
+++ b/src/musrFT.cpp
@@ -1439,15 +1439,17 @@ Int_t main(Int_t argc, Char_t *argv[])
 
     // if Fourier graphical export is whished, switch to batch mode
     Bool_t batch = false;
+    int cc=0;
+    char **arg;
     if (startupParam.graphicFormat.Length() != 0) {
       batch = true;
-      argv[argc] = (Char_t*)malloc(16*sizeof(Char_t));
-      strcpy(argv[argc], "-b");
-      argc++;
+      arg[cc] = (Char_t*)malloc(16*sizeof(Char_t));
+      strcpy(arg[cc], "-b");
+      cc++;
     }
 
     // plot the Fourier transform
-    TApplication app("App", &argc, argv);
+    TApplication app("App", &cc, arg);
 
     if (startupHandler) {
       fourierCanvas = std::unique_ptr<PFourierCanvas>(new PFourierCanvas(fourier, dataSetTag, startupParam.title.Data(),
diff --git a/src/musredit_qt5/mupp/plotter/mupp_plot.cpp b/src/musredit_qt5/mupp/plotter/mupp_plot.cpp
index 8c89b5a7..983000dc 100644
--- a/src/musredit_qt5/mupp/plotter/mupp_plot.cpp
+++ b/src/musredit_qt5/mupp/plotter/mupp_plot.cpp
@@ -77,7 +77,7 @@ int main(int argc, char *argv[])
     }
   }
 
-  TApplication app("App", &argc, argv);
+  TApplication app("App", nullptr, nullptr);
 
   Bool_t ok=kTRUE;
   PMuppCanvas *muppCanvas = new PMuppCanvas("mupp", 10, 10, 600, 800,
diff --git a/src/musredit_qt6/mupp/plotter/mupp_plot.cpp b/src/musredit_qt6/mupp/plotter/mupp_plot.cpp
index 8c89b5a7..983000dc 100644
--- a/src/musredit_qt6/mupp/plotter/mupp_plot.cpp
+++ b/src/musredit_qt6/mupp/plotter/mupp_plot.cpp
@@ -77,7 +77,7 @@ int main(int argc, char *argv[])
     }
   }
 
-  TApplication app("App", &argc, argv);
+  TApplication app("App", nullptr, nullptr);
 
   Bool_t ok=kTRUE;
   PMuppCanvas *muppCanvas = new PMuppCanvas("mupp", 10, 10, 600, 800,
diff --git a/src/musrt0.cpp b/src/musrt0.cpp
index 1c1ff37c..25b3fec2 100644
--- a/src/musrt0.cpp
+++ b/src/musrt0.cpp
@@ -779,7 +779,7 @@ Int_t main(Int_t argc, Char_t *argv[])
     //   3) set the data-, and bkg-range
     if (success) {
       // generate Root application needed for PMusrCanvas
-      TApplication app("App", &argc, argv);
+      TApplication app("App", nullptr, nullptr);
 
       PMusrT0Data musrT0Data;
       std::vector<PRawRunData*> rawRunData;
diff --git a/src/musrview.cpp b/src/musrview.cpp
index 8422c5af..b76383e0 100644
--- a/src/musrview.cpp
+++ b/src/musrview.cpp
@@ -302,12 +302,14 @@ int main(int argc, char *argv[])
 
   if (result == PMUSR_SUCCESS) {
     // generate Root application needed for PMusrCanvas
+    int cc=0;
+    char **arg;
     if (graphicsOutput || asciiOutput) {
-      argv[argc] = (char*)malloc(16*sizeof(char));
-      strcpy(argv[argc], "-b");
-      argc++;
+      arg[cc] = (char*)malloc(16*sizeof(char));
+      strcpy(arg[cc], "-b");
+      cc++;
     }
-    TApplication app("App", &argc, argv);
+    TApplication app("App", &cc, arg);
 
     std::vector<PMusrCanvas*> canvasVector;
     PMusrCanvas *musrCanvas;