--- a/combine_wave.h
+++ b/combine_wave.h
@@ -12,9 +12,10 @@
 #include <float.h>
 #include <math.h>
 #include <linux/soundcard.h>
-#include <sys/poll.h>
+#include <poll.h>
 #include "stdint.h"
 #include <sys/ioctl.h>
+#include <sys/select.h>
 #include <string.h>