diff --git a/src/sim65.vcxproj b/src/sim65.vcxproj
index b5b642d02..07a9f7fb5 100644
--- a/src/sim65.vcxproj
+++ b/src/sim65.vcxproj
@@ -94,7 +94,7 @@
     <ClCompile Include="sim65\main.c" />
     <ClCompile Include="sim65\memory.c" />
     <ClCompile Include="sim65\paravirt.c" />
-    <ClInclude Include="sim65\peripherals.c" />
+    <ClCompile Include="sim65\peripherals.c" />
   </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">