diff --git a/phpBB/assets/javascript/core.js b/phpBB/assets/javascript/core.js
index 36e881f5fd..6285a16734 100644
--- a/phpBB/assets/javascript/core.js
+++ b/phpBB/assets/javascript/core.js
@@ -27,7 +27,10 @@ phpbb.isTouch = (window && typeof window.ontouchstart !== 'undefined');
  */
 phpbb.loadingIndicator = function() {
 	if (!$loadingIndicator) {
-		$loadingIndicator = $('<div />', { id: 'loading_indicator' });
+		$loadingIndicator = $('<div />', { 
+			id: 'loading_indicator', 
+			class: 'loading_indicator', 
+		});
 		$loadingIndicator.appendTo('#page-footer');
 	}