diff --git a/src/applets/volume.c b/src/applets/volume.c
index 93463a0..e2cbf06 100644
--- a/src/applets/volume.c
+++ b/src/applets/volume.c
@@ -18,7 +18,7 @@
 
 
 #include <sys/ioctl.h>
-#ifdef __NetBSD__
+#if defined(__NetBSD__) || defined(__sun__)
 # include <sys/audioio.h>
 #else
 # include <sys/soundcard.h>