diff --git a/src/sim65.vcxproj b/src/sim65.vcxproj
index b5b642d02..46260e052 100644
--- a/src/sim65.vcxproj
+++ b/src/sim65.vcxproj
@@ -82,19 +82,19 @@
     </Link>
   </ItemDefinitionGroup>
   <ItemGroup>
+    <ClInclude Include="sim65\peripherals.h" />
     <ClInclude Include="sim65\6502.h" />
     <ClInclude Include="sim65\error.h" />
     <ClInclude Include="sim65\memory.h" />
     <ClInclude Include="sim65\paravirt.h" />
-    <ClInclude Include="sim65\peripherals.h" />
   </ItemGroup>
   <ItemGroup>
+    <ClInclude Include="sim65\peripherals.c" />
     <ClCompile Include="sim65\6502.c" />
     <ClCompile Include="sim65\error.c" />
     <ClCompile Include="sim65\main.c" />
     <ClCompile Include="sim65\memory.c" />
     <ClCompile Include="sim65\paravirt.c" />
-    <ClInclude Include="sim65\peripherals.c" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">