diff --git a/src/platforms/posix/px4_layer/hrt_work.h b/src/platforms/posix/px4_layer/hrt_work.h
index 69c5f204a3..ab3b5180e1 100644
--- a/src/platforms/posix/px4_layer/hrt_work.h
+++ b/src/platforms/posix/px4_layer/hrt_work.h
@@ -44,7 +44,7 @@ extern struct wqueue_s g_hrt_work;
 
 void hrt_work_queue_init(void);
 int hrt_work_queue(struct work_s *work, worker_t worker, void *arg, uint32_t delay);
-int hrt_work_cancel(struct work_s *work);
+void hrt_work_cancel(struct work_s *work);
 
 inline void hrt_work_lock();
 inline void hrt_work_unlock();