diff --git a/wxPython/src/_app_ex.py b/wxPython/src/_app_ex.py
index 4788189044..5ea24fb4e8 100644
--- a/wxPython/src/_app_ex.py
+++ b/wxPython/src/_app_ex.py
@@ -133,6 +133,8 @@ This program needs access to the screen. Please run with 'pythonw',
 not 'python', and only when you are logged in on the main display of
 your Mac."""
                     _sys.exit(1)
+            except SystemExit:
+                raise
             except:
                 pass