diff --git a/edit/linter-meta.js b/edit/linter-meta.js
index d99282ee..bd146a52 100644
--- a/edit/linter-meta.js
+++ b/edit/linter-meta.js
@@ -12,7 +12,7 @@ function createMetaCompiler(cm) {
     if (_cm !== cm) {
       return;
     }
-    const match = text.match(/\/\*\s*==userstyle==[\s\S]*?==\/userstyle==\s*\*\//i);
+    const match = text.match(/\/\*\!?\s*==userstyle==[\s\S]*?==\/userstyle==\s*\*\//i);
     if (!match) {
       return [];
     }
diff --git a/js/usercss.js b/js/usercss.js
index 0e9b95a5..27bc9c92 100644
--- a/js/usercss.js
+++ b/js/usercss.js
@@ -10,7 +10,7 @@ const usercss = (() => {
     // updateURL: 'updateUrl',
     name: undefined,
   };
-  const RX_META = /\/\*\s*==userstyle==[\s\S]*?==\/userstyle==\s*\*\//i;
+  const RX_META = /\/\*\!?\s*==userstyle==[\s\S]*?==\/userstyle==\s*\*\//i;
   const ERR_ARGS_IS_LIST = new Set(['missingMandatory', 'missingChar']);
   return {buildMeta, buildCode, assignVars};