diff --git a/Tests/Kernels/ProcessorTests/Kernel.cs b/Tests/Kernels/ProcessorTests/Kernel.cs
index 9ef432177..2320625f3 100644
--- a/Tests/Kernels/ProcessorTests/Kernel.cs
+++ b/Tests/Kernels/ProcessorTests/Kernel.cs
@@ -25,6 +25,7 @@ namespace ProcessorTests
                 TestVendorNameIsNotBlank();
                 TestCycleCount();
                 TestCycleRateIsNotZero();
+                TestMultiboot();
 
                 TestController.Completed();
             }
@@ -36,6 +37,11 @@ namespace ProcessorTests
             }
         }
 
+        public void TestMultiboot()
+        {
+            Assert.IsTrue(Multiboot.GetMBIAddress() != 0, $"Multiboot.GetMBIAddress works {Multiboot.GetMBIAddress()}");
+        }
+         
         public void TestBrandStringBlank()
         {
             string brandString = CPU.GetCPUBrandString();
diff --git a/source/Cosmos.Core_Asm/MultibootImpl.cs b/source/Cosmos.Core_Asm/MultibootImpl.cs
index d3c9226ac..c2203981f 100644
--- a/source/Cosmos.Core_Asm/MultibootImpl.cs
+++ b/source/Cosmos.Core_Asm/MultibootImpl.cs
@@ -1,12 +1,25 @@
 using Cosmos.Core;
 using IL2CPU.API.Attribs;
+using XSharp;
+using XSharp.Assembler;
 
 namespace Cosmos.Core_Asm
 {
     [Plug(Target = typeof(Multiboot))]
     public class MultibootImpl
     {
-        [PlugMethod(Assembler = typeof(MultibootAsm))]
-        public static uint GetMBIAddress() => throw null;
+        [PlugMethod(Assembler = typeof(MultibootImplAsm))]
+        public static uint GetMBIAddress()
+        {
+            return 0;
+        }
+    }
+
+    public class MultibootImplAsm : AssemblerMethod
+    {
+        public override void AssembleNew(Assembler aAssembler, object aMethodInfo)
+        {
+            XS.Push("MultibootSignature");
+        }
     }
 }