diff --git a/mozilla/browser/base/content/browser.js b/mozilla/browser/base/content/browser.js
index 41c8004694a..3e9e7648280 100644
--- a/mozilla/browser/base/content/browser.js
+++ b/mozilla/browser/base/content/browser.js
@@ -2607,8 +2607,10 @@ var newTabButtonObserver = {
     {
       var xferData = aXferData.data.split("\n");
       var url = xferData[0] ? xferData[0] : xferData[1];
-      if (url)
+      if (url) {
+        getBrowser().dragDropSecurityCheck(aEvent, aDragSession, url);
         openNewTabWith(url, null, null, aEvent);
+      }
     },
   getSupportedFlavours: function ()
     {
@@ -2638,8 +2640,10 @@ var newWindowButtonObserver = {
     {
       var xferData = aXferData.data.split("\n");
       var url = xferData[0] ? xferData[0] : xferData[1];
-      if (url)
+      if (url) {
+        getBrowser().dragDropSecurityCheck(aEvent, aDragSession, url);
         openNewWindowWith(url, null, null);
+      }
     },
   getSupportedFlavours: function ()
     {