diff --git a/direct/src/showbase/PythonUtil.py b/direct/src/showbase/PythonUtil.py
index e8d1ad9e47..1715fa77e6 100644
--- a/direct/src/showbase/PythonUtil.py
+++ b/direct/src/showbase/PythonUtil.py
@@ -2927,3 +2927,4 @@ __builtin__.fastRepr = fastRepr
 __builtin__.nullGen = nullGen
 __builtin__.flywheel = flywheel
 __builtin__.loopGen = loopGen
+__builtin__.StackTrace = StackTrace