diff --git a/src/core/ngx_connection.c b/src/core/ngx_connection.c
index ba1b3f9..3ba5e76 100644
--- a/src/core/ngx_connection.c
+++ b/src/core/ngx_connection.c
@@ -749,6 +749,8 @@
 
         ls[i].fd = (ngx_socket_t) -1;
     }
+
+    cycle->listening.nelts = 0;
 }
 
 
diff --git a/src/os/unix/ngx_process_cycle.c b/src/os/unix/ngx_process_cycle.c
index acafb7f..c9b0266 100644
--- a/src/os/unix/ngx_process_cycle.c
+++ b/src/os/unix/ngx_process_cycle.c
@@ -1296,14 +1296,19 @@
     void         *ident[4];
     ngx_event_t   ev;
 
-    cycle->connection_n = 512;
-
+    /*
+     * Set correct process type since closing listening Unix domain socket
+     * in a master process also removes the Unix domain socket file.
+     */
     ngx_process = NGX_PROCESS_HELPER;
 
-    ngx_worker_process_init(cycle, -1);
-
     ngx_close_listening_sockets(cycle);
 
+    /* Set a moderate number of connections for a helper process. */
+    cycle->connection_n = 512;
+
+    ngx_worker_process_init(cycle, -1);
+
     ngx_memzero(&ev, sizeof(ngx_event_t));
     ev.handler = ctx->handler;
     ev.data = ident;