diff --git a/src/MusicStore/Startup.cs b/src/MusicStore/Startup.cs
index 83809828bd..b70f01ba7b 100644
--- a/src/MusicStore/Startup.cs
+++ b/src/MusicStore/Startup.cs
@@ -96,7 +96,7 @@ public class Startup
         {
             user = new ApplicationUser { UserName = _username };
             await userManager.CreateAsync(user, _password);
-            await userManager.AddToRoleAsync(user.Id, _role);
+            await userManager.AddToRoleAsync(user, _role);
         }
     }
 }
\ No newline at end of file