diff --git a/src/base/single/editor/editor.textarea.js b/src/base/single/editor/editor.textarea.js
index 23fb87664..1c0afb044 100644
--- a/src/base/single/editor/editor.textarea.js
+++ b/src/base/single/editor/editor.textarea.js
@@ -136,6 +136,7 @@ BI.TextAreaEditor = BI.inherit(BI.Single, {
 
     setValue: function (value) {
         this.content.element.val(value);
+        this._checkWaterMark();
     },
 
     setStyle: function (style) {