diff --git a/src/System.Runtime.Intrinsics/ref/System.Runtime.Intrinsics.X86.cs b/src/System.Runtime.Intrinsics/ref/System.Runtime.Intrinsics.cs
similarity index 99%
rename from src/System.Runtime.Intrinsics/ref/System.Runtime.Intrinsics.X86.cs
rename to src/System.Runtime.Intrinsics/ref/System.Runtime.Intrinsics.cs
index 0f3f24effb78..123eaae4a97b 100644
--- a/src/System.Runtime.Intrinsics/ref/System.Runtime.Intrinsics.X86.cs
+++ b/src/System.Runtime.Intrinsics/ref/System.Runtime.Intrinsics.cs
@@ -9,12 +9,22 @@
 
 namespace System.Runtime.Intrinsics
 {
+    [StructLayout(LayoutKind.Sequential, Size = 8)]
+    public struct Vector64<T> where T : struct
+    {
+         private int _dummy;
+    }
     [StructLayout(LayoutKind.Sequential, Size = 16)]
-    public struct Vector128<T> where T : struct {}
+    public struct Vector128<T> where T : struct
+    {
+         private int _dummy;
+    }
     [StructLayout(LayoutKind.Sequential, Size = 32)]
-    public struct Vector256<T> where T : struct {}
+    public struct Vector256<T> where T : struct
+    {
+         private int _dummy;
+    }
 }
-
 namespace System.Runtime.Intrinsics.X86
 {
     public static class Aes 
diff --git a/src/System.Runtime.Intrinsics/ref/System.Runtime.Intrinsics.csproj b/src/System.Runtime.Intrinsics/ref/System.Runtime.Intrinsics.csproj
index 78a1f4b8fd91..f699e7a679cf 100644
--- a/src/System.Runtime.Intrinsics/ref/System.Runtime.Intrinsics.csproj
+++ b/src/System.Runtime.Intrinsics/ref/System.Runtime.Intrinsics.csproj
@@ -9,10 +9,10 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'netcoreapp-Debug|AnyCPU'" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'netcoreapp-Release|AnyCPU'" />
   <ItemGroup>
-    <Compile Include="System.Runtime.Intrinsics.X86.cs" />
+    <Compile Include="System.Runtime.Intrinsics.cs" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\..\System.Runtime\ref\System.Runtime.csproj" />
   </ItemGroup>
   <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory), dir.targets))\dir.targets" />
-</Project>
\ No newline at end of file
+</Project>