diff --git a/ui/jquery.ui.tabs.js b/ui/jquery.ui.tabs.js
index 992bd41b2..4362421db 100644
--- a/ui/jquery.ui.tabs.js
+++ b/ui/jquery.ui.tabs.js
@@ -22,6 +22,10 @@ function getNextTabId() {
 }
 
 function isLocal( anchor ) {
+	// support: IE7
+	// IE7 doesn't normalize the href property when set via script (#9317)
+	anchor = anchor.cloneNode( false );
+
 	return anchor.hash.length > 1 &&
 		decodeURIComponent( anchor.href.replace( rhash, "" ) ) ===
 			decodeURIComponent( location.href.replace( rhash, "" ) );