--- a/src/event/ngx_event_timer.h
+++ b/src/event/ngx_event_timer.h
@@ -8,7 +8,7 @@
 
 
 /*
- * 32 bit key value resolution
+ * 32 bit timer key value resolution
  *
  * 1 msec - 49 days
  * 10 msec - 1 years 4 months
@@ -28,15 +28,6 @@ int  ngx_event_timer_init(void);
 ngx_msec_t ngx_event_find_timer(void);
 void ngx_event_expire_timers(ngx_msec_t timer);
 
-#if 0
-int  ngx_event_timer_init(ngx_cycle_t *cycle);
-void ngx_event_timer_done(ngx_cycle_t *cycle);
-void ngx_event_add_timer(ngx_event_t *ev, ngx_msec_t timer);
-int  ngx_event_find_timer(void);
-void ngx_event_set_timer_delta(ngx_msec_t timer);
-void ngx_event_expire_timers(ngx_msec_t timer);
-#endif
-
 
 extern ngx_rbtree_t  *ngx_event_timer_rbtree;
 extern ngx_rbtree_t   ngx_event_timer_sentinel;
@@ -59,7 +50,11 @@ ngx_inline static void ngx_event_add_tim
     }
 
     ev->rbtree_key = (ngx_int_t)
+              (ngx_elapsed_msec / NGX_TIMER_RESOLUTION * NGX_TIMER_RESOLUTION
+                                              + timer) / NGX_TIMER_RESOLUTION;
+#if 0
                              (ngx_elapsed_msec + timer) / NGX_TIMER_RESOLUTION;
+#endif
 
     ngx_rbtree_insert(&ngx_event_timer_rbtree, &ngx_event_timer_sentinel,
                       (ngx_rbtree_t *) &ev->rbtree_key);
@@ -68,38 +63,4 @@ ngx_inline static void ngx_event_add_tim
 }
 
 
-#if 0
-
-ngx_inline static void ngx_event_del_timer(ngx_event_t *ev)
-{
-#if (NGX_DEBUG_EVENT)
-    ngx_connection_t *c = ev->data;
-    ngx_log_debug(ev->log, "del timer: %d:%d" _ c->fd _ ev->write);
-#endif
-
-    if (!ev->timer_next || !ev->timer_prev) {
-        ngx_log_error(NGX_LOG_ALERT, ev->log, 0, "timer already deleted");
-        return;
-    }
-
-    if (ev->timer_prev) {
-        ev->timer_prev->timer_next = ev->timer_next;
-    }
-
-    if (ev->timer_next) {
-        ev->timer_next->timer_delta += ev->timer_delta;
-        ev->timer_next->timer_prev = ev->timer_prev;
-        ev->timer_next = NULL;
-    }
-
-    if (ev->timer_prev) {
-        ev->timer_prev = NULL;
-    }
-
-    ev->timer_set = 0;
-}
-
-#endif
-
-
 #endif /* _NGX_EVENT_TIMER_H_INCLUDED_ */