diff --git a/src/jconf.h b/src/jconf.h
index 6b8a38b9..a3cf6dec 100644
--- a/src/jconf.h
+++ b/src/jconf.h
@@ -25,6 +25,7 @@
 #define MAX_REMOTE_NUM 10
 #define MAX_CONF_SIZE 16 * 1024
 #define DNS_THREAD_NUM 4
+#define MAX_CONNECT_TIMEOUT 10
 
 typedef struct {
     char *host;
diff --git a/src/local.c b/src/local.c
index 6bba2e80..213bd55a 100644
--- a/src/local.c
+++ b/src/local.c
@@ -688,9 +688,9 @@ static struct remote * new_remote(int fd, int timeout)
     remote->fd = fd;
     ev_io_init(&remote->recv_ctx->io, remote_recv_cb, fd, EV_READ);
     ev_io_init(&remote->send_ctx->io, remote_send_cb, fd, EV_WRITE);
-    ev_timer_init(&remote->send_ctx->watcher, remote_timeout_cb, min(5,
+    ev_timer_init(&remote->send_ctx->watcher, remote_timeout_cb, min(MAX_CONNECT_TIMEOUT,
                 timeout), 0);
-    ev_timer_init(&remote->recv_ctx->watcher, remote_timeout_cb, min(10,
+    ev_timer_init(&remote->recv_ctx->watcher, remote_timeout_cb, min(MAX_CONNECT_TIMEOUT,
                 timeout), timeout);
     remote->recv_ctx->remote = remote;
     remote->send_ctx->remote = remote;
diff --git a/src/redir.c b/src/redir.c
index 6209b242..4cd84145 100644
--- a/src/redir.c
+++ b/src/redir.c
@@ -471,7 +471,7 @@ static struct remote * new_remote(int fd, int timeout)
     remote->fd = fd;
     ev_io_init(&remote->recv_ctx->io, remote_recv_cb, fd, EV_READ);
     ev_io_init(&remote->send_ctx->io, remote_send_cb, fd, EV_WRITE);
-    ev_timer_init(&remote->send_ctx->watcher, remote_timeout_cb, min(5, timeout), 0);
+    ev_timer_init(&remote->send_ctx->watcher, remote_timeout_cb, min(MAX_CONNECT_TIMEOUT, timeout), 0);
     remote->recv_ctx->remote = remote;
     remote->recv_ctx->connected = 0;
     remote->send_ctx->remote = remote;
diff --git a/src/server.c b/src/server.c
index e4ad2190..5ce6b4df 100644
--- a/src/server.c
+++ b/src/server.c
@@ -803,7 +803,7 @@ static struct server * new_server(int fd, struct listen_ctx *listener)
     ev_io_init(&server->recv_ctx->io, server_recv_cb, fd, EV_READ);
     ev_io_init(&server->send_ctx->io, server_send_cb, fd, EV_WRITE);
     ev_timer_init(&server->recv_ctx->watcher, server_timeout_cb,
-                  min(10, listener->timeout), listener->timeout);
+                  min(MAX_CONNECT_TIMEOUT, listener->timeout), listener->timeout);
     server->recv_ctx->server = server;
     server->recv_ctx->connected = 0;
     server->send_ctx->server = server;
diff --git a/src/tunnel.c b/src/tunnel.c
index 7a612d40..2dfc2823 100644
--- a/src/tunnel.c
+++ b/src/tunnel.c
@@ -466,7 +466,7 @@ static struct remote * new_remote(int fd, int timeout)
     remote->fd = fd;
     ev_io_init(&remote->recv_ctx->io, remote_recv_cb, fd, EV_READ);
     ev_io_init(&remote->send_ctx->io, remote_send_cb, fd, EV_WRITE);
-    ev_timer_init(&remote->send_ctx->watcher, remote_timeout_cb, min(5,
+    ev_timer_init(&remote->send_ctx->watcher, remote_timeout_cb, min(MAX_CONNECT_TIMEOUT,
                 timeout), 0);
     remote->recv_ctx->remote = remote;
     remote->recv_ctx->connected = 0;
diff --git a/src/udprelay.c b/src/udprelay.c
index 4940ba52..6983f03f 100644
--- a/src/udprelay.c
+++ b/src/udprelay.c
@@ -914,7 +914,7 @@ int init_udprelay(const char *server_host, const char *server_port,
     setnonblocking(serverfd);
 
     server_ctx = new_server_ctx(serverfd);
-    server_ctx->timeout = min(timeout, 5);
+    server_ctx->timeout = min(timeout, MAX_CONNECT_TIMEOUT);
     server_ctx->method = method;
     server_ctx->iface = iface;
     server_ctx->conn_cache = conn_cache;