diff --git a/src/Ryujinx.HLE/HOS/Services/Ldn/UserServiceCreator/IUserLocalCommunicationService.cs b/src/Ryujinx.HLE/HOS/Services/Ldn/UserServiceCreator/IUserLocalCommunicationService.cs
index a2aef0dbf..6056fec2b 100644
--- a/src/Ryujinx.HLE/HOS/Services/Ldn/UserServiceCreator/IUserLocalCommunicationService.cs
+++ b/src/Ryujinx.HLE/HOS/Services/Ldn/UserServiceCreator/IUserLocalCommunicationService.cs
@@ -498,7 +498,7 @@ namespace Ryujinx.HLE.HOS.Services.Ldn.UserServiceCreator
             // On NX only input value 1 or 3 is allowed, with an error being thrown otherwise.
             if (protocolValue != 1 || protocolValue != 3)
             {
-                throw new ServiceNotImplementedException(this, context, $"{GetType().FullName}: Protocol value is {protocolValue}!!");
+                throw new ArgumentException($"{GetType().FullName}: Protocol value is not 1 or 3!! Protocol value: {protocolValue}");
             }
             
             Logger.Stub?.PrintStub(LogClass.ServiceLdn, $"Protocol value:  {protocolValue}");