diff --git a/sndiod/dev.c b/sndiod/dev.c
index 949f7db..96e1f54 100644
--- a/sndiod/dev.c
+++ b/sndiod/dev.c
@@ -93,6 +93,7 @@ void slot_ready(struct slot *);
 void slot_start(struct slot *);
 void slot_detach(struct slot *);
 void slot_stop(struct slot *);
+void slot_skip_update(struct slot *);
 void slot_write(struct slot *);
 void slot_read(struct slot *);
 int slot_skip(struct slot *);