diff --git a/pyqtgraph/Qt.py b/pyqtgraph/Qt.py
index 68f6d4d5..3d04cdc1 100644
--- a/pyqtgraph/Qt.py
+++ b/pyqtgraph/Qt.py
@@ -273,13 +273,6 @@ if QT_LIB in [PYQT5, PYQT6, PYSIDE2, PYSIDE6]:
     QtGui.QApplication.setGraphicsSystem = None
 
 
-if QT_LIB in [PYQT5, PYSIDE2]:
-    # Some constructs are getting deprecated in Qt6
-    # recreate the Qt6 structure
-
-    QtWidgets.QApplication.exec = QtWidgets.QApplication.exec_
-
-
 if QT_LIB in [PYQT6, PYSIDE6]:
     # We're using Qt6 which has a different structure so we're going to use a shim to
     # recreate the Qt5 structure