1 files changed, 1 insertions, 0 deletions

diff --git a/mixer.c b/mixer.c
index c436239c98..74250de9f2 100644
--- a/mixer.c
+++ b/mixer.c
@@ -4,6 +4,7 @@
 #include <sys/soundcard.h>
 #include <fcntl.h>
 #include <stdio.h>
+#include <unistd.h>
 
 #include "mixer.h"