diff --git a/src/http/ngx_http_write_filter_module.c b/src/http/ngx_http_write_filter_module.c
index bd37704..932f26d 100644
--- a/src/http/ngx_http_write_filter_module.c
+++ b/src/http/ngx_http_write_filter_module.c
@@ -321,16 +321,12 @@
         delay = (ngx_msec_t) ((nsent - sent) * 1000 / r->limit_rate);
 
         if (delay > 0) {
-            limit = 0;
             c->write->delayed = 1;
             ngx_add_timer(c->write, delay);
         }
     }
 
-    if (limit
-        && c->write->ready
-        && c->sent - sent >= limit - (off_t) (2 * ngx_pagesize))
-    {
+    if (chain && c->write->ready && !c->write->delayed) {
         ngx_post_event(c->write, &ngx_posted_next_events);
     }