diff --git a/libretro-common/audio/audio_mix.c b/libretro-common/audio/audio_mix.c
index 43ee51902c..689d2a9dde 100644
--- a/libretro-common/audio/audio_mix.c
+++ b/libretro-common/audio/audio_mix.c
@@ -29,6 +29,7 @@
 #endif
 
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 #include <memalign.h>
 #include <retro_miscellaneous.h>