diff --git a/python/helpers/StdlibTypes.properties b/python/helpers/StdlibTypes.properties
index 0cc9d7d78116..e823e665a859 100644
--- a/python/helpers/StdlibTypes.properties
+++ b/python/helpers/StdlibTypes.properties
@@ -777,7 +777,7 @@ __builtin__.str.replace = \
   :type old: string \n\
   :type new: string \n\
   :type count: int or long \n\
-  :rtype: bytes \n\
+  :rtype: string \n\
 
 __builtin__.str.rfind = \
   :type sub: string \n\