diff --git src/wp-admin/js/tags.js src/wp-admin/js/tags.js
index 333a2eb..703b5bd 100644
--- src/wp-admin/js/tags.js
+++ src/wp-admin/js/tags.js
@@ -63,7 +63,7 @@ jQuery(document).ready(function($) {
 				form.find( 'select#parent option:selected' ).after( '<option value="' + term.term_id + '">' + indent + term.name + '</option>' );
 			}
 
-			$('input[type="text"]:visible, textarea:visible', form).val('');
+			$('input[type="text"]:visible, input[type="url"]:visible, textarea:visible', form).val('');
 		});
 
 		return false;