diff --git a/src/.vs/ez80asm/v17/.suo b/src/.vs/ez80asm/v17/.suo
index 33a805d..b214627 100644
Binary files a/src/.vs/ez80asm/v17/.suo and b/src/.vs/ez80asm/v17/.suo differ
diff --git a/src/.vs/ez80asm/v17/Browse.VC.db b/src/.vs/ez80asm/v17/Browse.VC.db
index df89663..5bbe236 100644
Binary files a/src/.vs/ez80asm/v17/Browse.VC.db and b/src/.vs/ez80asm/v17/Browse.VC.db differ
diff --git a/src/ez80asm.vcxproj b/src/ez80asm.vcxproj
index 2e79c8a..06da15b 100644
--- a/src/ez80asm.vcxproj
+++ b/src/ez80asm.vcxproj
@@ -120,6 +120,7 @@
   </ItemDefinitionGroup>
   <ItemGroup>
     <ClCompile Include="assemble.c" />
+    <ClCompile Include="clock.c" />
     <ClCompile Include="filestack.c" />
     <ClCompile Include="getopt.c" />
     <ClCompile Include="globals.c" />
@@ -148,6 +149,7 @@
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="assemble.h" />
+    <ClInclude Include="clock.h" />
     <ClInclude Include="config.h" />
     <ClInclude Include="filestack.h" />
     <ClInclude Include="getopt.h" />
diff --git a/src/ez80asm.vcxproj.filters b/src/ez80asm.vcxproj.filters
index e6d1dd6..db689c6 100644
--- a/src/ez80asm.vcxproj.filters
+++ b/src/ez80asm.vcxproj.filters
@@ -63,6 +63,9 @@
     <ClCompile Include="vdp.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="clock.c">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="init.asm">
@@ -145,5 +148,8 @@
     <ClInclude Include="vdp.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="clock.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
 </Project>
\ No newline at end of file