diff --git a/Lib/idlelib/configHandler.py b/Lib/idlelib/configHandler.py
index 336d96973ee..3d75189e194 100644
--- a/Lib/idlelib/configHandler.py
+++ b/Lib/idlelib/configHandler.py
@@ -396,7 +396,7 @@ class IdleConf:
         source = self.defaultCfg if default else self.userCfg
         if source['highlight'].has_section(theme):
                 return theme
-        else:    
+        else:
             return "IDLE Classic"
 
     def CurrentKeys(self):