diff --git a/Lib/idlelib/PyShell.py b/Lib/idlelib/PyShell.py
index b16bbc082d8..692467ddc08 100644
--- a/Lib/idlelib/PyShell.py
+++ b/Lib/idlelib/PyShell.py
@@ -722,6 +722,7 @@ class ModifiedInterpreter(InteractiveInterpreter):
                     master=self.tkconsole.text):
                     raise
                 else:
+                    self.showtraceback()
             else:
                 raise
         except: