diff --git a/Lib/idlelib/PyShell.py b/Lib/idlelib/PyShell.py
index aaa40c4..f1148e2 100644
--- a/Lib/idlelib/PyShell.py
+++ b/Lib/idlelib/PyShell.py
@@ -299,7 +299,6 @@
             "stdout": idleConf.GetHighlight(theme, "stdout"),
             "stderr": idleConf.GetHighlight(theme, "stderr"),
             "console": idleConf.GetHighlight(theme, "console"),
-            None: idleConf.GetHighlight(theme, "normal"),
         })
 
 class ModifiedUndoDelegator(UndoDelegator):