diff --git a/src/base/single/text.js b/src/base/single/text.js
index f0cb1b332..bc316725d 100644
--- a/src/base/single/text.js
+++ b/src/base/single/text.js
@@ -117,8 +117,8 @@
         },
 
         doRedMark: function (keyword) {
-            if (BI.isKey(this.options.keyword)) {
-                this._doRedMark(this.options.keyword);
+            if (BI.isKey(keyword)) {
+                this._doRedMark(keyword);
             }
         },