diff --git a/src/core/ngx_queue.h b/src/core/ngx_queue.h
index da0ffd2e1..39296add4 100644
--- a/src/core/ngx_queue.h
+++ b/src/core/ngx_queue.h
@@ -20,6 +20,11 @@ struct ngx_queue_s {
 };
 
 
+#define ngx_queue_init(q)                                                     \
+    (q)->prev = q;                                                            \
+    (q)->next = q;
+
+
 #define ngx_queue_empty(h)                                                    \
     (h == (h)->prev)