diff --git a/Oqtane.Application/Client/Startup/ClientStartup.cs b/Oqtane.Application/Client/Startup/ClientStartup.cs
index 1cdbd905..cf29f81d 100644
--- a/Oqtane.Application/Client/Startup/ClientStartup.cs
+++ b/Oqtane.Application/Client/Startup/ClientStartup.cs
@@ -8,7 +8,10 @@ namespace Oqtane.Application.Startup
     {
         public void ConfigureServices(IServiceCollection services)
         {
-            services.AddScoped<IMyModuleService, MyModuleService>();
+            if (!services.Any(s => s.ServiceType == typeof(IMyModuleService)))
+            {
+                services.AddScoped<IMyModuleService, MyModuleService>();
+            }
         }
     }
 }
diff --git a/Oqtane.Server/wwwroot/Modules/Templates/External/Client/Startup/ClientStartup.cs b/Oqtane.Server/wwwroot/Modules/Templates/External/Client/Startup/ClientStartup.cs
index 611b5a8e..5050abee 100644
--- a/Oqtane.Server/wwwroot/Modules/Templates/External/Client/Startup/ClientStartup.cs
+++ b/Oqtane.Server/wwwroot/Modules/Templates/External/Client/Startup/ClientStartup.cs
@@ -8,7 +8,10 @@ namespace [Owner].Module.[Module].Startup
     {
         public void ConfigureServices(IServiceCollection services)
         {
-            services.AddScoped<I[Module]Service, [Module]Service>();
+            if (!services.Any(s => s.ServiceType == typeof(I[Module]Service)))
+            {
+                services.AddScoped<I[Module]Service, [Module]Service>();
+            }
         }
     }
 }