diff --git a/src/fsharp.ts b/src/fsharp.ts
index 281385b0..26a8da6c 100644
--- a/src/fsharp.ts
+++ b/src/fsharp.ts
@@ -121,7 +121,7 @@ export const language = <ILanguage>{
 
 		whitespace: [
 			[/[ \t\r\n]+/, ''],
-			[/\(\*/, 'comment', '@comment'],
+			[/\(\*(?!\))/, 'comment', '@comment'],
 			[/\/\/.*$/, 'comment'],
 		],