diff --git a/browser/base/content/urlbarBindings.xml b/browser/base/content/urlbarBindings.xml
index 30d711163d25..2be15cdc3c27 100644
--- a/browser/base/content/urlbarBindings.xml
+++ b/browser/base/content/urlbarBindings.xml
@@ -1054,9 +1054,10 @@ file, You can obtain one at http://mozilla.org/MPL/2.0/.
         <parameter name="aEvent"/>
         <body><![CDATA[
           let droppedItem = this._getDroppableItem(aEvent);
-          if (droppedItem) {
+          let droppedURL = droppedItem instanceof URL ? droppedItem.href : droppedItem;
+          if (droppedURL && (droppedURL !== gBrowser.currentURI.spec)) {
             let triggeringPrincipal = browserDragAndDrop.getTriggeringPrincipal(aEvent);
-            this.value = droppedItem instanceof URL ? droppedItem.href : droppedItem;
+            this.value = droppedURL;
             SetPageProxyState("invalid");
             this.focus();
             this.handleCommand(null, undefined, undefined, triggeringPrincipal);
