diff --git a/grammars/mzn.cson b/grammars/mzn.cson
index 0dd062b..32f335b 100644
--- a/grammars/mzn.cson
+++ b/grammars/mzn.cson
@@ -39,7 +39,7 @@
   }
 
   {
-    'match': '\\b(for|forall|if|then|else|where)\\b'
+    'match': '\\b(for|forall|if|then|else|endif|where)\\b'
     'name': 'keyword.control.mzn'
   }