diff --git a/queue.h b/queue.h
index 12a77cbfc5513916871595a0792e3f86a609fa0f..12abb3146d2983110cdc076fbf7f1d3c41e6d02d 100644
--- a/queue.h
+++ b/queue.h
@@ -8,5 +8,6 @@ typedef struct _queue {
 } queue;
 
 bool is_empty(queue q);
+int queue_dequeue(queue *q);
 
 #endif