--- a/msvc/libucx/libucx.vcxproj.filters	Sun Dec 15 15:46:51 2024 +0100
+++ b/msvc/libucx/libucx.vcxproj.filters	Sun Dec 15 16:10:19 2024 +0100
@@ -124,5 +124,8 @@
     <ClCompile Include="..\..\src\streams.c">
       <Filter>Source</Filter>
     </ClCompile>
+    <ClCompile Include="..\..\src\szmul.c">
+      <Filter>Source</Filter>
+    </ClCompile>
   </ItemGroup>
 </Project>
\ No newline at end of file