diff --git a/src/proto_sockpair.c b/src/proto_sockpair.c
index a6005ee..bdc7ebe 100644
--- a/src/proto_sockpair.c
+++ b/src/proto_sockpair.c
@@ -158,7 +158,7 @@
 	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);
 
 	return err;
 
diff --git a/src/proto_tcp.c b/src/proto_tcp.c
index df4e5a4..197cb43 100644
--- a/src/proto_tcp.c
+++ b/src/proto_tcp.c
@@ -999,7 +999,7 @@
 	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) {
diff --git a/src/proto_uxst.c b/src/proto_uxst.c
index 2a5e431..61c89d5 100644
--- a/src/proto_uxst.c
+++ b/src/proto_uxst.c
@@ -343,7 +343,7 @@
 	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);
 
 	return err;