diff --git a/ide/vs2022/mimalloc.vcxproj b/ide/vs2022/mimalloc.vcxproj
index 2c21eda4..5efc8fd0 100644
--- a/ide/vs2022/mimalloc.vcxproj
+++ b/ide/vs2022/mimalloc.vcxproj
@@ -262,7 +262,6 @@
     <ClInclude Include="..\..\include\mimalloc\prim.h" />
     <ClInclude Include="..\..\include\mimalloc\track.h" />
     <ClInclude Include="..\..\include\mimalloc\types.h" />
-    <ClInclude Include="..\..\src\arena.h" />
     <ClInclude Include="..\..\src\bitmap.h" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
diff --git a/ide/vs2022/mimalloc.vcxproj.filters b/ide/vs2022/mimalloc.vcxproj.filters
index cb0303e0..54ee0fcb 100644
--- a/ide/vs2022/mimalloc.vcxproj.filters
+++ b/ide/vs2022/mimalloc.vcxproj.filters
@@ -93,9 +93,6 @@
     <ClInclude Include="..\..\include\mimalloc\prim.h">
       <Filter>Headers</Filter>
     </ClInclude>
-    <ClInclude Include="..\..\src\arena.h">
-      <Filter>Headers</Filter>
-    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <Filter Include="Headers">