diff --git a/content/html/content/src/nsHTMLInputElement.h b/content/html/content/src/nsHTMLInputElement.h
index 52bde41c1126..c3b442458bae 100644
--- a/content/html/content/src/nsHTMLInputElement.h
+++ b/content/html/content/src/nsHTMLInputElement.h
@@ -428,7 +428,7 @@ protected:
   void FireOnChange();
 
   /**
-   * Visit a the group of radio buttons this radio belongs to
+   * Visit the group of radio buttons this radio belongs to
    * @param aVisitor the visitor to visit with
    */
   nsresult VisitGroup(nsIRadioVisitor* aVisitor, PRBool aFlushContent);