diff --git a/src/lib/n98-magerun/modules/Zookal_HarrisStreetImpex/src/HarrisStreet/CoreConfigData/Exporter/Yaml.php b/src/lib/n98-magerun/modules/Zookal_HarrisStreetImpex/src/HarrisStreet/CoreConfigData/Exporter/Yaml.php
index 440f76170..a12f1797f 100644
--- a/src/lib/n98-magerun/modules/Zookal_HarrisStreetImpex/src/HarrisStreet/CoreConfigData/Exporter/Yaml.php
+++ b/src/lib/n98-magerun/modules/Zookal_HarrisStreetImpex/src/HarrisStreet/CoreConfigData/Exporter/Yaml.php
@@ -73,10 +73,6 @@ protected function _getRS($length, $string = ' ')
      */
     protected function _prepareValue($value)
     {
-        if (is_numeric($value)) {
-            return $value;
-        }
-
         if (strpos($value, "\n") !== FALSE) {
             $values = explode("\n", $value);
             foreach ($values as &$line) {
@@ -86,6 +82,6 @@ protected function _prepareValue($value)
             return "|\n" . $value;
         }
 
-        return '"' . addcslashes($value, '"') . '"';
+        return sprintf("'%s'", str_replace('\'', '\'\'', $value));
     }
-}
\ No newline at end of file
+}