diff --git a/core/um-filters-members.php b/core/um-filters-members.php
index 62c777a4..47e372f9 100644
--- a/core/um-filters-members.php
+++ b/core/um-filters-members.php
@@ -238,13 +238,13 @@
 	/***
 	***	@sorting random
 	***/
-	add_filter('pre_user_query', function($query) {
-	   if($query->query_vars["orderby"] == 'random') {
+	add_filter('pre_user_query','um_modify_sortby_randomly');
+	function um_modify_sortby_randomly( $query ){
+ 		if($query->query_vars["orderby"] == 'random') {
 	       $query->query_orderby = 'ORDER by RAND()';
-	   }
-
-	   return $query;
-	});
+	   	}
+		return $query;		
+	}
 
 	/***
 	***	@hook in the member results array