diff --git a/src/sim65.vcxproj b/src/sim65.vcxproj
index 7bc489398..b5b642d02 100644
--- a/src/sim65.vcxproj
+++ b/src/sim65.vcxproj
@@ -86,6 +86,7 @@
     <ClInclude Include="sim65\error.h" />
     <ClInclude Include="sim65\memory.h" />
     <ClInclude Include="sim65\paravirt.h" />
+    <ClInclude Include="sim65\peripherals.h" />
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="sim65\6502.c" />
@@ -93,8 +94,9 @@
     <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">
   </ImportGroup>
-</Project>
\ No newline at end of file
+</Project>