diff --git a/src/core/tcp.c b/src/core/tcp.c
index a132cb4e..115b9145 100644
--- a/src/core/tcp.c
+++ b/src/core/tcp.c
@@ -688,7 +688,7 @@ tcp_listen_with_backlog(struct tcp_pcb *pcb, u8_t backlog)
 #endif /* LWIP_CALLBACK_API */
 #if TCP_LISTEN_BACKLOG
   lpcb->accepts_pending = 0;
-  lpcb->backlog = backlog;
+  tcp_backlog_set(lpcb, backlog);
 #endif /* TCP_LISTEN_BACKLOG */
   TCP_REG(&tcp_listen_pcbs.pcbs, (struct tcp_pcb *)lpcb);
   return (struct tcp_pcb *)lpcb;