diff --git a/src/proto_tcp.c b/src/proto_tcp.c
index cfd58e6..c6f70d2 100644
--- a/src/proto_tcp.c
+++ b/src/proto_tcp.c
@@ -1082,7 +1082,7 @@
 	listener->state = LI_LISTEN;
 
 	fd_insert(fd, listener, listener->proto->accept,
-	          thread_mask(listener->bind_conf->bind_thread));
+	          thread_mask(listener->bind_conf->bind_thread) & all_threads_mask);
 
  tcp_return:
 	if (msg && errlen) {