diff --git a/docs/queries.rst b/docs/queries.rst
index 862dd32..7d2dc9c 100644
--- a/docs/queries.rst
+++ b/docs/queries.rst
@@ -85,7 +85,7 @@ Show all fields **except** those in ``exclude``:
     class QuestionType(DjangoObjectType):
         class Meta:
             model = Question
-            exclude = ('question_text')
+            exclude = ('question_text', )
 
 
 Customising fields