diff --git a/README.md b/README.md
index fc32a8f..ef86af3 100644
--- a/README.md
+++ b/README.md
@@ -216,6 +216,10 @@ interface IUserService {
   getUser(id: string): Promise<User>;
 }
 
+const ILogger = createServiceIdentifier<ILogger>();
+const IUserRepository = createServiceIdentifier<IUserRepository>();
+const IUserService = createServiceIdentifier<IUserService>();
+
 @injectable()
 class Logger implements ILogger {
   log(message: string) {
@@ -247,11 +251,6 @@ class UserService implements IUserService {
   }
 }
 
-// Service registration
-const ILogger = createServiceIdentifier<ILogger>();
-const IUserRepository = createServiceIdentifier<IUserRepository>();
-const IUserService = createServiceIdentifier<IUserService>();
-
 const services = new ServiceCollection();
 services.addSingleton(ILogger, Logger);
 services.addScoped(IUserRepository, UserRepository);