diff --git a/sys/dev/sound/pcm/datatypes.h b/sys/dev/sound/pcm/datatypes.h
index 8a28162bb6c4..ac674138a8f1 100644
--- a/sys/dev/sound/pcm/datatypes.h
+++ b/sys/dev/sound/pcm/datatypes.h
@@ -137,8 +137,10 @@ struct _snddev_info {
 	void *devinfo;
 	device_t dev;
 	char status[SND_STATUSLEN];
+#ifdef SND_DYNSYSCTL
 	struct sysctl_ctx_list sysctl_tree;
 	struct sysctl_oid *sysctl_tree_top;
+#endif
 };
 
 /*****************************************************************************/