diff --git a/src/audio/SDL_audio.c b/src/audio/SDL_audio.c
index 784805e9be..16400649ab 100644
--- a/src/audio/SDL_audio.c
+++ b/src/audio/SDL_audio.c
@@ -37,7 +37,7 @@ static const AudioBootStrap *const bootstrap[] = {
 #if SDL_AUDIO_DRIVER_PULSEAUDIO
     &PULSEAUDIO_bootstrap,
 #endif
-#if SDL_AUDIO_DRIVER_ALSA
+#ifdef SDL_AUDIO_DRIVER_ALSA
     &ALSA_bootstrap,
 #endif
 #ifdef SDL_AUDIO_DRIVER_SNDIO
diff --git a/src/audio/alsa/SDL_alsa_audio.c b/src/audio/alsa/SDL_alsa_audio.c
index d09774e099..f958786537 100644
--- a/src/audio/alsa/SDL_alsa_audio.c
+++ b/src/audio/alsa/SDL_alsa_audio.c
@@ -20,7 +20,7 @@
 */
 #include "SDL_internal.h"
 
-#if SDL_AUDIO_DRIVER_ALSA
+#ifdef SDL_AUDIO_DRIVER_ALSA
 
 #ifndef SDL_ALSA_NON_BLOCKING
 #define SDL_ALSA_NON_BLOCKING 0