diff --git a/source/Ox.UI/js/Video/ClipPanel.js b/source/Ox.UI/js/Video/ClipPanel.js
index 0c29aeb7..93635bdf 100644
--- a/source/Ox.UI/js/Video/ClipPanel.js
+++ b/source/Ox.UI/js/Video/ClipPanel.js
@@ -271,7 +271,10 @@ Ox.ClipPanel = function(options, self) {
     }
 
     function isSortable() {
-        return self.options.editable && self.options.sort[0].key == 'index';
+        return self.options.editable
+            && self.options.sort && self.options.sort.length
+            && self.options.sort[0].key == 'index'
+            && self.options.sort[0].operator == '+';
     }
 
     function updateSortElement() {