diff --git a/test/vs2022/etl.vcxproj.filters b/test/vs2022/etl.vcxproj.filters
index 7e7037be..c534b4df 100644
--- a/test/vs2022/etl.vcxproj.filters
+++ b/test/vs2022/etl.vcxproj.filters
@@ -3701,6 +3701,18 @@
     <ClCompile Include="..\test_not_null_pointer_constexpr.cpp">
       <Filter>Tests\Misc</Filter>
     </ClCompile>
+    <ClCompile Include="..\syntax_check\delegate_observable.h.t.cpp">
+      <Filter>Tests\Syntax Checks\Source</Filter>
+    </ClCompile>
+    <ClCompile Include="..\syntax_check\crc8_opensafety.h.t.cpp">
+      <Filter>Tests\Syntax Checks\Source</Filter>
+    </ClCompile>
+    <ClCompile Include="..\syntax_check\crc16_opensafety_a.h.t.cpp">
+      <Filter>Tests\Syntax Checks\Source</Filter>
+    </ClCompile>
+    <ClCompile Include="..\syntax_check\crc16_opensafety_b.h.t.cpp">
+      <Filter>Tests\Syntax Checks\Source</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\..\library.properties">