diff --git a/articles/modeling/duplication-refs.md b/articles/modeling/duplication-refs.md
index eeb815f..869412f 100644
--- a/articles/modeling/duplication-refs.md
+++ b/articles/modeling/duplication-refs.md
@@ -124,7 +124,7 @@ Bad
     }
   ]
 }
-    
+```
 ---
 **Related Articles** 
 - [Referencing Another API Spec](/modeling/modeling-with-openapi/referencing-another-api-spec)