diff --git a/src/case/editor/editor.shelter.js b/src/case/editor/editor.shelter.js
index d063827ed..1f8ca3d03 100644
--- a/src/case/editor/editor.shelter.js
+++ b/src/case/editor/editor.shelter.js
@@ -137,7 +137,7 @@ BI.ShelterEditor = BI.inherit(BI.Widget, {
         });
         this._showHint();
         self._checkText();
-        this.text.doRedMark(o.keyword);
+        BI.isKey(o.keyword) && this.text.doRedMark(o.keyword);
     },
 
     _checkText: function () {
@@ -231,9 +231,10 @@ BI.ShelterEditor = BI.inherit(BI.Widget, {
     },
 
     setValue: function (k) {
+        var o = this.options;
         this.editor.setValue(k);
         this._checkText();
-        this.text.doRedMark(this.options.keyword);
+        BI.isKey(o.keyword) && this.text.doRedMark(o.keyword);
     },
 
     getValue: function () {
diff --git a/src/case/editor/editor.sign.js b/src/case/editor/editor.sign.js
index ba3c79833..6840cd953 100644
--- a/src/case/editor/editor.sign.js
+++ b/src/case/editor/editor.sign.js
@@ -150,7 +150,7 @@ BI.SignEditor = BI.inherit(BI.Widget, {
             } else {
                 this.text.setValue(this.editor.getValue());
                 this.text.element.removeClass("bi-water-mark");
-                this.text.doRedMark(o.keyword);
+                BI.isKey(o.keyword) && this.text.doRedMark(o.keyword);
             }
         }, this));
     },