diff --git a/lib/src/clients/main-thread-client.ts b/lib/src/clients/main-thread-client.ts
index 1a67e1b9..97c39d39 100755
--- a/lib/src/clients/main-thread-client.ts
+++ b/lib/src/clients/main-thread-client.ts
@@ -522,11 +522,10 @@ export const MainThreadClient = async (
     const refreshAccessToken = async (): Promise<BasicUserInfo> => {
         try {
             await _authenticationClient.refreshAccessToken();
-            await getCustomGrantConfigData().then((customGrantConfig) => {
+            const customGrantConfig = await getCustomGrantConfigData();
             if (customGrantConfig) {
-                requestCustomGrant(customGrantConfig);
+                await requestCustomGrant(customGrantConfig);
             }
-            });
             _spaHelper.refreshAccessTokenAutomatically();
 
             return _authenticationClient.getBasicUserInfo();