diff --git a/src/Core/IdentityBuilder.cs b/src/Core/IdentityBuilder.cs
index aa1f2af6d7..12d585fe4e 100644
--- a/src/Core/IdentityBuilder.cs
+++ b/src/Core/IdentityBuilder.cs
@@ -127,7 +127,7 @@ namespace Microsoft.AspNetCore.Identity
         {
             if (!typeof(IUserTwoFactorTokenProvider<>).MakeGenericType(UserType).GetTypeInfo().IsAssignableFrom(provider.GetTypeInfo()))
             {
-                throw new InvalidOperationException(Resources.FormatInvalidManagerType(provider.Name, "IUserTokenProvider", UserType.Name));
+                throw new InvalidOperationException(Resources.FormatInvalidManagerType(provider.Name, "IUserTwoFactorTokenProvider", UserType.Name));
             }
             Services.Configure<IdentityOptions>(options =>
             {