diff --git a/Pilz.Net/Api/ApiServer.cs b/Pilz.Net/Api/ApiServer.cs
index e5b12a9..3af9c5d 100644
--- a/Pilz.Net/Api/ApiServer.cs
+++ b/Pilz.Net/Api/ApiServer.cs
@@ -59,7 +59,6 @@ public class ApiServer(string apiUrl) : IApiServer
 
         // Sanity checks
         if (method.GetCustomAttribute<MessageHandlerAttribute>() is not MessageHandlerAttribute attribute
-            || method.GetParameters().FirstOrDefault() is not ParameterInfo parameter
             || !method.ReturnType.IsAssignableTo(typeof(ApiResult)))
         {
             if (throwOnError)