diff --git a/LDTTeam.Authentication.Server/Services/ConditionService.cs b/LDTTeam.Authentication.Server/Services/ConditionService.cs
index 03c0605..70d8b28 100644
--- a/LDTTeam.Authentication.Server/Services/ConditionService.cs
+++ b/LDTTeam.Authentication.Server/Services/ConditionService.cs
@@ -34,7 +34,7 @@ public class ConditionService(DatabaseContext db, IServiceProvider services, ILo
 
             IdentityUserLogin<string>? loginInfo = await db.UserLogins
                 .FirstOrDefaultAsync(x =>
-                    x.LoginProvider == provider && 
+                    x.LoginProvider.ToLower() == provider.ToLower() && 
                     x.ProviderKey == providerKey, cancellationToken: cancellationToken);
 
             var userId = loginInfo?.UserId;