diff --git a/app/code/core/Mage/Core/Helper/Abstract.php b/app/code/core/Mage/Core/Helper/Abstract.php
index 012e580ab11..ffbd2503a61 100644
--- a/app/code/core/Mage/Core/Helper/Abstract.php
+++ b/app/code/core/Mage/Core/Helper/Abstract.php
@@ -343,6 +343,9 @@ public function jsQuoteEscape($data, $quote = '\'')
      */
     public function quoteEscape($data, $addSlashes = false)
     {
+        if (!$data) {
+            return $data;
+        }
         if ($addSlashes === true) {
             $data = addslashes($data);
         }