diff --git a/src/audio/SDL_audio.c b/src/audio/SDL_audio.c
index a763f86cd7..8a24e743e4 100644
--- a/src/audio/SDL_audio.c
+++ b/src/audio/SDL_audio.c
@@ -52,7 +52,7 @@ static const AudioBootStrap *const bootstrap[] = {
 #ifdef SDL_AUDIO_DRIVER_DSOUND
     &DSOUND_bootstrap,
 #endif
-#if SDL_AUDIO_DRIVER_HAIKU
+#ifdef SDL_AUDIO_DRIVER_HAIKU
     &HAIKUAUDIO_bootstrap,
 #endif
 #if SDL_AUDIO_DRIVER_COREAUDIO
diff --git a/src/audio/haiku/SDL_haikuaudio.cc b/src/audio/haiku/SDL_haikuaudio.cc
index 01b6d300cd..ccc353aadf 100644
--- a/src/audio/haiku/SDL_haikuaudio.cc
+++ b/src/audio/haiku/SDL_haikuaudio.cc
@@ -20,7 +20,7 @@
 */
 #include "SDL_internal.h"
 
-#if SDL_AUDIO_DRIVER_HAIKU
+#ifdef SDL_AUDIO_DRIVER_HAIKU
 
 /* Allow access to the audio stream on Haiku */