diff --git a/sources/qetdiagrameditor.cpp b/sources/qetdiagrameditor.cpp
index 22916b1f1..2ba94bb3c 100644
--- a/sources/qetdiagrameditor.cpp
+++ b/sources/qetdiagrameditor.cpp
@@ -2341,10 +2341,10 @@ void QETDiagramEditor::generateTerminalBlock()
 
 #elif  defined(Q_OS_MAC)
 	if (openedProjects().count()){
-		success = process->startDetached("/Library/Frameworks/Python.framework/Versions/3.8/bin/qet_tb_generator", {(QETDiagramEditor::currentProjectView()->project()->filePath())});
+		success = process->startDetached("/Library/Frameworks/Python.framework/Versions/3.9/bin/qet_tb_generator", {(QETDiagramEditor::currentProjectView()->project()->filePath())});
 	}
 	else  {
-		success = process->startDetached("/Library/Frameworks/Python.framework/Versions/3.8/bin/qet_tb_generator", {("")});
+		success = process->startDetached("/Library/Frameworks/Python.framework/Versions/3.9/bin/qet_tb_generator", {("")});
 	}
 		if (openedProjects().count()){
 		success = process->startDetached(QDir::homePath() + "/.qet/qet_tb_generator.app", {(QETDiagramEditor::currentProjectView()->project()->filePath())});
@@ -2395,7 +2395,8 @@ void QETDiagramEditor::generateTerminalBlock()
 		"<br>"
 		"<a href='https://pypi.python.org/pypi/qet-tb-generator'>qet-tb-generator</a>"
 		"<br><B><U> First install on macOSX</B></U>"
-		"<br>1. Install, if required, python 3.8 bundle only, "
+		"<br>1. Install, if required, python 3.9 bundle only, "
+		"<br>2 Run Profile.command script"
 		"because program use hardcoded PATH for localise qet-tb-generator plugin "
 		"<br> Visit :"
 		"<br>"