diff --git a/share/qtcreator/qml/qmlpuppet/qml2puppet/qml2puppet.pri b/share/qtcreator/qml/qmlpuppet/qml2puppet/qml2puppet.pri
index f0285ca4b0d..940047c6b2c 100644
--- a/share/qtcreator/qml/qmlpuppet/qml2puppet/qml2puppet.pri
+++ b/share/qtcreator/qml/qmlpuppet/qml2puppet/qml2puppet.pri
@@ -2,7 +2,7 @@ QT += core gui widgets qml quick network
 QT += core-private qml-private quick-private gui-private
 
 CONFIG += c++17
-win32: QMAKE_CXXFLAGS += /std:c++17
+win32:!mingw: QMAKE_CXXFLAGS += /std:c++17
 
 DEFINES -= QT_CREATOR