diff --git a/preditor/gui/app.py b/preditor/gui/app.py
index dd4f0a01..78573a34 100644
--- a/preditor/gui/app.py
+++ b/preditor/gui/app.py
@@ -160,4 +160,4 @@ def start(self):
         """Exec's the QApplication if it hasn't already been started."""
         if self.app_created and self.app and not self.app_has_exec:
             self.app_has_exec = True
-            Qt.QtCompat.QApplication.exec()
+            QApplication.exec()