diff --git a/Pdf4QtDocDiff/main.cpp b/Pdf4QtDocDiff/main.cpp
index 1726712..ed2f1fd 100644
--- a/Pdf4QtDocDiff/main.cpp
+++ b/Pdf4QtDocDiff/main.cpp
@@ -25,6 +25,11 @@ int main(int argc, char *argv[])
 {
     QApplication::setAttribute(Qt::AA_CompressHighFrequencyEvents, true);
     QApplication::setAttribute(Qt::AA_DontCheckOpenGLContextThreadAffinity, true);
+
+#if !defined(Q_OS_WIN)
+    QApplication::setAttribute(Qt::AA_DontUseNativeDialogs, true);
+#endif
+
     QApplication application(argc, argv);
 
     QCoreApplication::setOrganizationName("MelkaJ");
diff --git a/Pdf4QtDocPageOrganizer/main.cpp b/Pdf4QtDocPageOrganizer/main.cpp
index 9992c16..e2db11f 100644
--- a/Pdf4QtDocPageOrganizer/main.cpp
+++ b/Pdf4QtDocPageOrganizer/main.cpp
@@ -25,6 +25,11 @@ int main(int argc, char *argv[])
 {
     QApplication::setAttribute(Qt::AA_CompressHighFrequencyEvents, true);
     QApplication::setAttribute(Qt::AA_DontCheckOpenGLContextThreadAffinity, true);
+
+#if !defined(Q_OS_WIN)
+    QApplication::setAttribute(Qt::AA_DontUseNativeDialogs, true);
+#endif
+
     QApplication application(argc, argv);
 
     QCoreApplication::setOrganizationName("MelkaJ");
diff --git a/Pdf4QtViewerLite/main.cpp b/Pdf4QtViewerLite/main.cpp
index 6074ff6..f342292 100644
--- a/Pdf4QtViewerLite/main.cpp
+++ b/Pdf4QtViewerLite/main.cpp
@@ -25,6 +25,11 @@ int main(int argc, char *argv[])
 {
     QApplication::setAttribute(Qt::AA_CompressHighFrequencyEvents, true);
     QApplication::setAttribute(Qt::AA_DontCheckOpenGLContextThreadAffinity, true);
+
+#if !defined(Q_OS_WIN)
+    QApplication::setAttribute(Qt::AA_DontUseNativeDialogs, true);
+#endif
+
     QApplication application(argc, argv);
 
     QCoreApplication::setOrganizationName("MelkaJ");
diff --git a/Pdf4QtViewerProfi/main.cpp b/Pdf4QtViewerProfi/main.cpp
index 30967a1..21561ff 100644
--- a/Pdf4QtViewerProfi/main.cpp
+++ b/Pdf4QtViewerProfi/main.cpp
@@ -30,6 +30,11 @@ int main(int argc, char *argv[])
 
     QApplication::setAttribute(Qt::AA_CompressHighFrequencyEvents, true);
     QApplication::setAttribute(Qt::AA_DontCheckOpenGLContextThreadAffinity, true);
+
+#if !defined(Q_OS_WIN)
+    QApplication::setAttribute(Qt::AA_DontUseNativeDialogs, true);
+#endif
+
     QApplication application(argc, argv);
 
     QCoreApplication::setOrganizationName("MelkaJ");