diff --git a/src/sound/sdl_s.cpp b/src/sound/sdl_s.cpp
--- a/src/sound/sdl_s.cpp
+++ b/src/sound/sdl_s.cpp
@@ -44,4 +44,4 @@ const HalSoundDriver _sdl_sound_driver =
 	SdlSoundStop,
 };
 
-#endif
+#endif /* WITH_SDL */