diff --git a/mars_client.c b/mars_client.c
index 180b8864..ec0e7dc4 100644
--- a/mars_client.c
+++ b/mars_client.c
@@ -385,9 +385,13 @@ void _do_timeout(struct client_output *output, struct list_head *anchor, bool fo
 		mref_a = container_of(tmp, struct client_mref_aspect, io_head);
 		mref = mref_a->object;
 
-		if (!force &&
-		    (brick->io_timeout <= 0 || !time_is_before_jiffies(mref_a->submit_jiffies + brick->io_timeout * HZ))) {
-			break;
+		if (!force) {
+			int io_timeout = brick->io_timeout;
+			if (io_timeout <= 0)
+				io_timeout = global_net_io_timeout;
+			if (io_timeout <= 0 || !time_is_before_jiffies(mref_a->submit_jiffies + io_timeout * HZ)) {
+				break;
+			}
 		}
 
 		MARS_DBG("signalling IO error at pos = %lld len = %d\n", mref->ref_pos, mref->ref_len);
@@ -705,6 +709,9 @@ struct mars_limiter client_limiter = {
 };
 EXPORT_SYMBOL_GPL(client_limiter);
 
+int global_net_io_timeout = CONFIG_MARS_NETIO_TIMEOUT;
+EXPORT_SYMBOL_GPL(global_net_io_timeout);
+
 int __init init_mars_client(void)
 {
 	MARS_INF("init_client()\n");
diff --git a/mars_client.h b/mars_client.h
index 0c70fdeb..08b998ee 100644
--- a/mars_client.h
+++ b/mars_client.h
@@ -6,7 +6,7 @@
 #include "lib_limiter.h"
 
 extern struct mars_limiter client_limiter;
-
+extern int global_net_io_timeout;
 
 #define CLIENT_HASH_MAX 256
 
diff --git a/sy_old/mars_light.c b/sy_old/mars_light.c
index e4a5a648..d013e48b 100644
--- a/sy_old/mars_light.c
+++ b/sy_old/mars_light.c
@@ -219,7 +219,7 @@ int _set_client_params(struct mars_brick *_brick, void *private)
 {
 	struct client_brick *client_brick = (void*)_brick;
 	struct client_cookie *clc = private;
-	client_brick->io_timeout = CONFIG_MARS_NETIO_TIMEOUT;
+	client_brick->io_timeout = 0;
 	client_brick->limit_mode = clc ? clc->limit_mode : false;
 	MARS_INF("name = '%s' path = '%s'\n", _brick->brick_name, _brick->brick_path);
 	return 1;
diff --git a/sy_old/mars_proc.c b/sy_old/mars_proc.c
index 32c5b062..9ee1f07e 100644
--- a/sy_old/mars_proc.c
+++ b/sy_old/mars_proc.c
@@ -181,6 +181,15 @@ ctl_table mars_table[] = {
 		.proc_handler	= &proc_dointvec,
 		.strategy       = &sysctl_intvec,
 	},
+	{
+		.ctl_name       = CTL_UNNUMBERED,
+		.procname	= "net_io_timeout",
+		.data           = &global_net_io_timeout,
+		.maxlen         = sizeof(int),
+		.mode		= 0600,
+		.proc_handler	= &proc_dointvec,
+		.strategy       = &sysctl_intvec,
+	},
 #ifdef CONFIG_MARS_LOADAVG_LIMIT
 	{
 		.ctl_name       = CTL_UNNUMBERED,