diff --git a/web/includes/functions.php b/web/includes/functions.php
index 9ee3f68be..1cb0e4a95 100644
--- a/web/includes/functions.php
+++ b/web/includes/functions.php
@@ -1899,7 +1899,8 @@ define('HTTP_STATUS_BAD_REQUEST', 400);
 define('HTTP_STATUS_FORBIDDEN', 403);
 
 function ajaxError($message, $code=HTTP_STATUS_OK) {
-  ZM\Error($message);
+  $backTrace = debug_backtrace();
+  ZM\Error($message.' from '.print_r($backTrace,true));
   if ( function_exists('ajaxCleanup') )
     ajaxCleanup();
   if ( $code == HTTP_STATUS_OK ) {