diff --git a/mozilla/browser/base/content/urlbarBindings.xml b/mozilla/browser/base/content/urlbarBindings.xml
index c856caebdff..340d793c4a2 100644
--- a/mozilla/browser/base/content/urlbarBindings.xml
+++ b/mozilla/browser/base/content/urlbarBindings.xml
@@ -116,6 +116,7 @@
             nsDragAndDrop.dragDropSecurityCheck(aEvent, aDragSession, url);
 
             this.value = url;
+            SetPageProxyState("invalid");
             try {
               urlSecurityCheck(this.value,
                                gBrowser.contentPrincipal,