diff --git a/js/admin-dnd.js b/js/admin-dnd.js
index d93df4416..2b219e041 100644
--- a/js/admin-dnd.js
+++ b/js/admin-dnd.js
@@ -25,7 +25,7 @@
 */
 
 $(document).ready(function() {
-    initTableDnD();
+	initTableDnD();
 });
 
 function initTableDnD(table)
diff --git a/js/admin.js b/js/admin.js
index 6d0f360ef..132822824 100644
--- a/js/admin.js
+++ b/js/admin.js
@@ -855,7 +855,9 @@ function display_action_details(row_id, controller, token, action, params) {
 				}
 				current_element.data('dataMaped',true);
 				current_element.data('opened', false);
-				initTableDnD('.details_'+id+' table.tableDnD');
+				
+				if (typeof(initTableDnD) != 'undefined')
+					initTableDnD('.details_'+id+' table.tableDnD');
 			}
 		});
 	}