diff --git a/lib/core/auth.js b/lib/core/auth.js
index 3fc9a3160..7db9cf9cc 100644
--- a/lib/core/auth.js
+++ b/lib/core/auth.js
@@ -287,11 +287,12 @@ export default class Auth {
 
     const _endpoint = Object.assign({}, defaults, endpoint)
 
+    const tokenName = this.strategies[strategy].options.tokenName || 'Authorization'
     if (!_endpoint.headers) {
       _endpoint.headers = {}
     }
-    if (!_endpoint.headers['Authorization'] && isSet(token) && token) {
-      _endpoint.headers['Authorization'] = token
+    if (!_endpoint.headers[tokenName] && isSet(token) && token) {
+      _endpoint.headers[tokenName] = token
     }
 
     return this.request(_endpoint)