diff --git a/lib/helpers/isURLSameOrigin.js b/lib/helpers/isURLSameOrigin.js
index 18db03b3c5..d9f05f16d1 100644
--- a/lib/helpers/isURLSameOrigin.js
+++ b/lib/helpers/isURLSameOrigin.js
@@ -53,9 +53,20 @@ export default platform.isStandardBrowserEnv ?
     * @returns {boolean} True if URL shares the same origin, otherwise false
     */
     return function isURLSameOrigin(requestURL) {
-      const parsed = (utils.isString(requestURL)) ? resolveURL(requestURL) : requestURL;
-      return (parsed.protocol === originURL.protocol &&
-          parsed.host === originURL.host);
+      if (
+        !requestURL ||
+        (!utils.isString(requestURL) &&
+        !(
+          Object.prototype.hasOwnProperty.call(requestURL, "protocol") &&
+          Object.prototype.hasOwnProperty.call(requestURL, "host")
+        ))
+      ) {
+        return utils.isString(requestURL) ? requestURL : typeof requestURL;
+      }
+      const parsed = resolveURL(requestURL);
+      return (
+        parsed.protocol === originURL.protocol && parsed.host === originURL.host
+      );
     };
   })() :