diff --git a/syntax/python.vim b/syntax/python.vim
index eac4c13..c2b5484 100644
--- a/syntax/python.vim
+++ b/syntax/python.vim
@@ -192,6 +192,9 @@ syn region FunctionParameters start='(' end=')' contains=
             \ OptionalParameters,
             \ pythonRepeat,
             \ pythonInstanceVariable,
+            \ pythonConditional,
+            \ pythonComment,
+            \ pythonOperator,
             \ pythonHexNumber,
             \ pythonStatement,
             \ pythonOctNumber,