--- a/chrome/content/content.js
+++ b/chrome/content/content.js
@@ -474,17 +474,17 @@ Content.prototype = {
             keyCode: json.keyCode,
             charCode: json.charCode
           });
         }
         break;
 
       case "Browser:MouseDown":
         this._overlayTimeout.clear();
-        this._overlayTimeout.clear();
+        this._contextTimeout.clear();
 
         let element = elementFromPoint(x, y);
         if (!element)
           return;
 
         if (element.mozMatchesSelector("*:link,*:visited,*:link *,*:visited *,*[role=button],button,input,option,select,textarea,label")) {
           this._overlayTimeout.once(kTapOverlayTimeout, function() {
             let rects = getContentClientRects(element);