diff --git a/src/syntax.c b/src/syntax.c
index 34563aa..bbcf02b 100644
--- a/src/syntax.c
+++ b/src/syntax.c
@@ -6372,7 +6372,7 @@
 }
 
 /*
- * Handle command line completion for :match and :echohl command: Add "None"
+ * Handle command line completion for :match and :echohl command: Add "NONE"
  * as highlight group.
  */
     void