diff --git a/Pdf4QtDocDiff/main.cpp b/Pdf4QtDocDiff/main.cpp
index ed2f1fd..1726712 100644
--- a/Pdf4QtDocDiff/main.cpp
+++ b/Pdf4QtDocDiff/main.cpp
@@ -25,11 +25,6 @@ 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 e2db11f..9992c16 100644
--- a/Pdf4QtDocPageOrganizer/main.cpp
+++ b/Pdf4QtDocPageOrganizer/main.cpp
@@ -25,11 +25,6 @@ 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 f342292..6074ff6 100644
--- a/Pdf4QtViewerLite/main.cpp
+++ b/Pdf4QtViewerLite/main.cpp
@@ -25,11 +25,6 @@ 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 21561ff..30967a1 100644
--- a/Pdf4QtViewerProfi/main.cpp
+++ b/Pdf4QtViewerProfi/main.cpp
@@ -30,11 +30,6 @@ 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");