diff --git a/tests/smoke/hello_cube/CMakeLists.txt b/tests/smoke/hello_cube/CMakeLists.txt
index 5619dd8..a2c18b1 100644
--- a/tests/smoke/hello_cube/CMakeLists.txt
+++ b/tests/smoke/hello_cube/CMakeLists.txt
@@ -20,12 +20,12 @@ add_custom_target(kraken_cube_assets ALL
 )
 
 if (WIN32)
-  add_executable(kraken_cube WIN32 main_win.cpp harness.cpp hello_cube.cpp)
+  add_executable(kraken_cube WIN32 main_win.cpp harness.cpp harness.h hello_cube.cpp hello_cube.h)
   add_compile_definitions(UNICODE)
   list (APPEND EXTRA_LIBS shcore)
 
 else(WIN32)
-  add_executable(kraken_cube main_macos.mm harness.cpp hello_cube.cpp)
+  add_executable(kraken_cube main_macos.mm harness.cpp harness.h hello_cube.cpp hello_cube.h)
   set(CMAKE_CXX_COMPILER "clang++")
   list (APPEND EXTRA_LIBS "-framework QuartzCore")
   list (APPEND EXTRA_LIBS "-framework Metal")