diff --git a/lib/adapters/xhr.js b/lib/adapters/xhr.js
index 8c98d114b6..5a0fae426c 100644
--- a/lib/adapters/xhr.js
+++ b/lib/adapters/xhr.js
@@ -122,11 +122,10 @@ module.exports = function xhrAdapter(config) {
       });
     }
 
-    // Add withCredentials to request if needed
-    if (config.withCredentials) {
-      request.withCredentials = true;
+    // Add withCredentials to request if needed. Explicit to set a true or false
+    if (typeof config.withCredentials !== 'undefined') {
+      request.withCredentials = !!config.withCredentials;
     }
-
     // Add responseType to request if needed
     if (config.responseType) {
       try {