diff --git a/TransactionProcessing.MerchantPos/Program.cs b/TransactionProcessing.MerchantPos/Program.cs
index 9b7f87c..c0f9531 100644
--- a/TransactionProcessing.MerchantPos/Program.cs
+++ b/TransactionProcessing.MerchantPos/Program.cs
@@ -61,7 +61,7 @@
     builder.Services.RegisterHttpClient<ITransactionProcessorClient, TransactionProcessorClient>();
     builder.Services.AddScoped<IEfRepository, EfRepository>();
     builder.Services.AddScoped<MerchantRuntime>();
-    builder.Services.AddHttpClient<IApiClient, ApiClient>();
+    builder.Services.RegisterHttpClient<IApiClient, ApiClient>();
     builder.Services.AddSingleton<IMerchantRuntimeFactory, MerchantRuntimeFactory>();
 
     builder.Services.AddDbContext<MerchantDbContext>((sp, options) =>