diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt
index 899ae047..182ed221 100644
--- a/test/CMakeLists.txt
+++ b/test/CMakeLists.txt
@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.10)
-project(etl_unit_tests LANGUAGES CXX)
+project(etl_unit_tests LANGUAGES C CXX)
 
 #include(FetchContent)
 #FetchContent_Declare(
diff --git a/test/syntax_check/CMakeLists.txt b/test/syntax_check/CMakeLists.txt
index 0e2627df..178c2a67 100644
--- a/test/syntax_check/CMakeLists.txt
+++ b/test/syntax_check/CMakeLists.txt
@@ -1,5 +1,5 @@
 cmake_minimum_required(VERSION 3.10.0)
-project(etl_syntax_check)
+project(etl_syntax_check C CXX)
 
 add_definitions(-DETL_DEBUG)
 
diff --git a/test/vs2022/etl.vcxproj b/test/vs2022/etl.vcxproj
index 6396b761..2b069673 100644
--- a/test/vs2022/etl.vcxproj
+++ b/test/vs2022/etl.vcxproj
@@ -3552,6 +3552,7 @@
     <ClInclude Include="..\..\include\etl\monostate.h" />
     <ClInclude Include="..\..\include\etl\not_null.h" />
     <ClInclude Include="..\..\include\etl\poly_span.h" />
+    <ClInclude Include="..\..\include\etl\print.h" />
     <ClInclude Include="..\..\include\etl\private\bitset_legacy.h" />
     <ClInclude Include="..\..\include\etl\private\bitset_new.h" />
     <ClInclude Include="..\..\include\etl\private\chrono\day.h" />
@@ -10362,6 +10363,7 @@
     <ClCompile Include="..\test_not_null_unique_pointer.cpp" />
     <ClCompile Include="..\test_poly_span_dynamic_extent.cpp" />
     <ClCompile Include="..\test_poly_span_fixed_extent.cpp" />
+    <ClCompile Include="..\test_print.cpp" />
     <ClCompile Include="..\test_pseudo_moving_average.cpp" />
     <ClCompile Include="..\test_delegate.cpp" />
     <ClCompile Include="..\test_delegate_cpp03.cpp" />
diff --git a/test/vs2022/etl.vcxproj.filters b/test/vs2022/etl.vcxproj.filters
index 6deed683..1bb46bf0 100644
--- a/test/vs2022/etl.vcxproj.filters
+++ b/test/vs2022/etl.vcxproj.filters
@@ -1539,6 +1539,9 @@
     <ClInclude Include="..\..\include\etl\inplace_function.h">
       <Filter>ETL\Utilities</Filter>
     </ClInclude>
+    <ClInclude Include="..\..\include\etl\print.h">
+      <Filter>ETL\Strings</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\test_string_char.cpp">
@@ -3770,6 +3773,9 @@
     <ClCompile Include="..\test_inplace_function.cpp">
       <Filter>Tests\Callbacks &amp; Delegates</Filter>
     </ClCompile>
+    <ClCompile Include="..\test_print.cpp">
+      <Filter>Tests\Strings</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="..\..\library.properties">