diff --git a/test/vs2017/etl.vcxproj b/test/vs2017/etl.vcxproj
index 89fd056b..98db3d12 100644
--- a/test/vs2017/etl.vcxproj
+++ b/test/vs2017/etl.vcxproj
@@ -370,6 +370,7 @@
     <ClInclude Include="..\..\include\etl\fsm.h" />
     <ClInclude Include="..\..\include\etl\fsm_generator.h" />
     <ClInclude Include="..\..\include\etl\largest_generator.h" />
+    <ClInclude Include="..\..\include\etl\math_constants.h" />
     <ClInclude Include="..\..\include\etl\memory_model.h" />
     <ClInclude Include="..\..\include\etl\message.h" />
     <ClInclude Include="..\..\include\etl\message_bus.h" />
diff --git a/test/vs2017/etl.vcxproj.filters b/test/vs2017/etl.vcxproj.filters
index 31d549a3..5acf6a32 100644
--- a/test/vs2017/etl.vcxproj.filters
+++ b/test/vs2017/etl.vcxproj.filters
@@ -684,6 +684,9 @@
     <ClInclude Include="..\..\include\etl\stl\limits.h">
       <Filter>ETL\STL</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\include\etl\math_constants.h">
+      <Filter>ETL\Maths</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\main.cpp">