diff --git a/src/os/win32/ngx_wsasend_chain.c b/src/os/win32/ngx_wsasend_chain.c
index 03c5aa9..2543c33 100644
--- a/src/os/win32/ngx_wsasend_chain.c
+++ b/src/os/win32/ngx_wsasend_chain.c
@@ -118,7 +118,8 @@
 
         c->sent += sent;
 
-        for (cl = in; cl && sent > 0; cl = cl->next) {
+        for (cl = in; cl; cl = cl->next) {
+
             if (ngx_buf_special(cl->buf)) {
                 continue;
             }