diff --git a/dox/dev_guides/contribution/coding_rules.md b/dox/dev_guides/contribution/coding_rules.md
index 7ee840af7a..6c76bb8f1e 100644
--- a/dox/dev_guides/contribution/coding_rules.md
+++ b/dox/dev_guides/contribution/coding_rules.md
@@ -622,7 +622,6 @@ public:
 
 };
 
-~~~~~{.cpp}
 class MyPackage_MyClass : public MyPackage_BaseClass
 {