diff --git a/module/testcase/js/batchcreate.js b/module/testcase/js/batchcreate.js
index b63e18724e..8f04e467a7 100644
--- a/module/testcase/js/batchcreate.js
+++ b/module/testcase/js/batchcreate.js
@@ -3,7 +3,7 @@ $(document).ready(function()
     removeDitto();//Remove 'ditto' in first row.
     if($('#batchCreateForm table thead tr th.c-title').width() < 150) $('#batchCreateForm table thead tr th.c-title').width('150');
 
-    $(document).on('mousedown', '.chosen-with-drop', function()
+    $(document).on('mouseup', '.chosen-with-drop', function()
     {
         var select = $(this).prev('select');
         var id     = $(select).attr('id');