diff --git a/test/vs2017/etl.vcxproj b/test/vs2017/etl.vcxproj
index baaa7f5f..1e77e967 100644
--- a/test/vs2017/etl.vcxproj
+++ b/test/vs2017/etl.vcxproj
@@ -434,6 +434,7 @@
     <ClInclude Include="..\..\include\etl\string_view.h" />
     <ClInclude Include="..\..\include\etl\task.h" />
     <ClInclude Include="..\..\include\etl\timer.h" />
+    <ClInclude Include="..\..\include\etl\to_string.h" />
     <ClInclude Include="..\..\include\etl\type_lookup.h" />
     <ClInclude Include="..\..\include\etl\type_lookup_generator.h" />
     <ClInclude Include="..\..\include\etl\type_select.h" />
diff --git a/test/vs2017/etl.vcxproj.filters b/test/vs2017/etl.vcxproj.filters
index 37e13f60..c1c35c1f 100644
--- a/test/vs2017/etl.vcxproj.filters
+++ b/test/vs2017/etl.vcxproj.filters
@@ -732,6 +732,9 @@
     <ClInclude Include="..\..\include\etl\queue_spsc_locked.h">
       <Filter>ETL\Containers</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\include\etl\to_string.h">
+      <Filter>ETL\Utilities</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\main.cpp">