diff --git a/5-WebApp-AuthZ/5-2-Groups/Services/MicrosoftGraph-Rest/MSGraphService.cs b/5-WebApp-AuthZ/5-2-Groups/Services/MicrosoftGraph-Rest/MSGraphService.cs
index c818630e..5a879275 100644
--- a/5-WebApp-AuthZ/5-2-Groups/Services/MicrosoftGraph-Rest/MSGraphService.cs
+++ b/5-WebApp-AuthZ/5-2-Groups/Services/MicrosoftGraph-Rest/MSGraphService.cs
@@ -277,7 +277,7 @@ public async Task<UserGroupsAndDirectoryRoles> GetCurrentUserGroupsAndRolesAsync
         public async Task<List<Group>> GetMyMemberOfGroupsAsync(string accessToken)
         {
             List<Group> groups = new List<Group>();
-
+            PrepareAuthenticatedClient(accessToken); 
             // Get groups the current user is a direct member of.
             IUserMemberOfCollectionWithReferencesPage memberOfGroups = await graphServiceClient.Me.MemberOf.Request().GetAsync();
             if (memberOfGroups?.Count > 0)
@@ -378,4 +378,4 @@ await Task.Run(() =>
             }
         }
     }
-}
\ No newline at end of file
+}