diff --git a/lib/utils.js b/lib/utils.js
index 28ccfff3c0..5d966f4448 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -185,7 +185,7 @@ function isURLSearchParams(val) {
  * @returns {String} The String freed of excess whitespace
  */
 function trim(str) {
-  return str.replace(/^\s*/, '').replace(/\s*$/, '');
+  return str.trim ? str.trim() : str.replace(/^\s+|\s+$/g, '');
 }
 
 /**