diff --git a/lib/adapters/xhr.js b/lib/adapters/xhr.js
index 7e8668dade..377e3e96e0 100644
--- a/lib/adapters/xhr.js
+++ b/lib/adapters/xhr.js
@@ -129,8 +129,8 @@ module.exports = function xhrAdapter(config) {
     }
 
     // Add withCredentials to request if needed
-    if (config.withCredentials) {
-      request.withCredentials = true;
+    if (!utils.isUndefined(config.withCredentials)) {
+      request.withCredentials = !!config.withCredentials;
     }
 
     // Add responseType to request if needed