diff --git a/reportbuilder/classes/local/aggregation/groupconcat.php b/reportbuilder/classes/local/aggregation/groupconcat.php
index 2b7083c5b6e..8a76fc5e997 100644
--- a/reportbuilder/classes/local/aggregation/groupconcat.php
+++ b/reportbuilder/classes/local/aggregation/groupconcat.php
@@ -61,16 +61,6 @@ class groupconcat extends base {
         ]);
     }
 
-    /**
-     * We cannot sort this aggregation type
-     *
-     * @param bool $columnsortable
-     * @return bool
-     */
-    public static function sortable(bool $columnsortable): bool {
-        return false;
-    }
-
     /**
      * Override base method to ensure all SQL fields are concatenated together if there are multiple
      *