diff --git a/docs/contributing/codebase-overview.md b/docs/contributing/codebase-overview.md
index 328f77e15a7c5..d0062cf331b78 100644
--- a/docs/contributing/codebase-overview.md
+++ b/docs/contributing/codebase-overview.md
@@ -113,7 +113,7 @@ One way to think about it is that the condition should reflect the normal situat
 
 It is a good idea to avoid spamming the console with duplicate warnings:
 
-````js
+```js
 var warning = require('warning');
 
 var didWarnAboutMath = false;