diff --git a/include/osmocore/write_queue.h b/include/osmocore/write_queue.h
index c84000c..64d4159 100644
--- a/include/osmocore/write_queue.h
+++ b/include/osmocore/write_queue.h
@@ -38,6 +38,7 @@
 };
 
 void write_queue_init(struct write_queue *queue, int max_length);
+void write_queue_clear(struct write_queue *queue);
 int write_queue_enqueue(struct write_queue *queue, struct msgb *data);
 int write_queue_bfd_cb(struct bsc_fd *fd, unsigned int what);