diff --git a/backend_test/example_sdl_vulkan/CMakeLists.txt b/backend_test/example_sdl_vulkan/CMakeLists.txt
index 730a277..3163f9c 100644
--- a/backend_test/example_sdl_vulkan/CMakeLists.txt
+++ b/backend_test/example_sdl_vulkan/CMakeLists.txt
@@ -92,6 +92,7 @@ target_link_libraries(cimgui_sdl ${IMGUI_LIBRARIES} ${IMGUI_SDL_LIBRARY})
 #using library
 include_directories(../../generator/output/)
 add_executable(test_sdl main.c)
+target_compile_definitions(test_sdl PUBLIC -DCIMGUI_USE_VULKAN -DCIMGUI_USE_SDL)
 if (MINGW)
 target_link_options(test_sdl PRIVATE "-mconsole")
 endif()