diff --git a/src/base/single/editor/editor.code.js b/src/base/single/editor/editor.code.js
index 3acb4b164..51579c702 100644
--- a/src/base/single/editor/editor.code.js
+++ b/src/base/single/editor/editor.code.js
@@ -86,7 +86,7 @@ BI.CodeEditor = BI.inherit(BI.Single, {
         this.editor.replaceSelection(param);
         var to = this.editor.getCursor();
         var options = {className: 'param', atomic: true};
-        if(BI.isNotNull(param.match(/<!.*!>/))){
+        if(BI.isNotNull(param.match(/^<!.*!>$/))){
             options.className = 'error-param';
         }
         this.editor.markText(from, to, options);