diff --git a/windows/CMakeLists.txt b/windows/CMakeLists.txt
index 20bb2560..3180cb8c 100644
--- a/windows/CMakeLists.txt
+++ b/windows/CMakeLists.txt
@@ -29,7 +29,9 @@ if(USE_ANGLE)
   add_compile_definitions(USE_ANGLE)
   list(APPEND PLUGIN_SOURCES    "flutter_angle_texture.cpp"   "egl_context.cpp"   )
 else() 
-  add_compile_definitions(WGL_USE_BACKING_WINDOW)
+  if(WGL_USE_BACKING_WINDOW)
+    add_compile_definitions(WGL_USE_BACKING_WINDOW)
+  endif()
   list(APPEND PLUGIN_SOURCES "wgl_context.cpp" "opengl_texture_buffer.cpp" "backing_window.cpp")
   # if(WGL_USE_BACKING_WINDOW)
   #   list(APPEND PLUGIN_SOURCES )