diff --git a/src/mono/sample/HelloWorld/Program.cs b/src/mono/sample/HelloWorld/Program.cs
index 601010973c2f8d..6d0b31d30dc6f8 100644
--- a/src/mono/sample/HelloWorld/Program.cs
+++ b/src/mono/sample/HelloWorld/Program.cs
@@ -5,54 +5,15 @@
 
 namespace HelloWorld
 {
-    struct S1 {
-        internal double d1, d2;
-    }
-
-    ref struct R1 {
-        internal ref double d1; // 8
-        internal ref object o1; // += sizeof(MonoObject*)
-        internal object o2;  // skip
-        internal ref S1 s1; //+= instance_size(S1)
-        internal S1 s2; // skip
-        public R1(ref double d1, ref object o1, ref S1 s1) {
-            this.d1 = ref d1;
-            this.o1 = ref o1;
-            this.s1 = ref s1;
-        }
-        internal void Run()
-        {
-            Console.WriteLine("oi");
-        }
-    }
-
     internal class Program
     {
         private static void Main(string[] args)
         {
-            Run();
-        }
-        static void Run()
-        {
-            Invoke(new string[] { "TEST" });
-        }
-        static void Invoke(object[] parameters)
-        {
-            CheckArguments(parameters, "abcd"u8);
-        }
-        static void CheckArguments(ReadOnlySpan<object> parameters, ReadOnlySpan<byte> parameters2)
-        {
-            double d1thays = 123.0;
-            object o1thays = new String("thays");
-            var s1thays = new S1();
-            s1thays.d1 = 10;
-            s1thays.d2 = 20;
-            R1 myR1 = new R1(ref d1thays, ref o1thays, ref s1thays);
-            myR1.o2 = new String("thays2");
-            myR1.s2 = new S1();
-            myR1.s2.d1 = 30;
-            myR1.s2.d2 = 40;
-            System.Diagnostics.Debugger.Break();
+            bool isMono = typeof(object).Assembly.GetType("Mono.RuntimeStructs") != null;
+            Console.WriteLine($"Hello World {(isMono ? "from Mono!" : "from CoreCLR!")}");
+            Console.WriteLine(typeof(object).Assembly.FullName);
+            Console.WriteLine(System.Reflection.Assembly.GetEntryAssembly ());
+            Console.WriteLine(System.Runtime.InteropServices.RuntimeInformation.FrameworkDescription);
         }
     }
-}
+}
\ No newline at end of file