diff --git a/src/KSFramework/KSMessaging/Extensions/RegisterMediatorServices.cs b/src/KSFramework/KSMessaging/Extensions/RegisterMediatorServices.cs
index b2bba17..fcf4026 100644
--- a/src/KSFramework/KSMessaging/Extensions/RegisterMediatorServices.cs
+++ b/src/KSFramework/KSMessaging/Extensions/RegisterMediatorServices.cs
@@ -95,13 +95,13 @@ private static void RegisterAllImplementationsOf<TInterface>(this IServiceCollec
                 switch (lifetime)
                 {
                     case ServiceLifetime.Transient:
-                        services.AddTransient(interfaceType, implementation);
+                        services.AddTransient(implementation);
                         break;
                     case ServiceLifetime.Scoped:
-                        services.AddScoped(interfaceType, implementation);
+                        services.AddScoped(implementation);
                         break;
                     case ServiceLifetime.Singleton:
-                        services.AddSingleton(interfaceType, implementation);
+                        services.AddSingleton(implementation);
                         break;
                     default:
                         throw new ArgumentException("Invalid service lifetime", nameof(lifetime));