diff --git a/src/cardgui.hxx b/src/cardgui.hxx
index 3667f3b..7cdfd76 100644
--- a/src/cardgui.hxx
+++ b/src/cardgui.hxx
@@ -13,7 +13,11 @@
 #include <password.hxx>
 
 #include <QtCore/QProcess>
+#if  QT_VERSION >= 0x050000
 #include <QtWidgets/QMessageBox>
+#else
+#include <QtGui/QMessageBox>
+#endif
 
 class CardGui: public QMainWindow, protected Ui_CardGui {