diff --git a/executer/kernel/mcctrl/control.c b/executer/kernel/mcctrl/control.c
index 5ead3293..3bac86db 100644
--- a/executer/kernel/mcctrl/control.c
+++ b/executer/kernel/mcctrl/control.c
@@ -3636,8 +3636,8 @@ int __mcctrl_os_read_write_cpu_register(ihk_os_t os, int cpu,
 	isp.op = op;
 	isp.pdesc = virt_to_phys(ldesc);
 
-	/* 1 sec timeout for the case where McKernel can't respond */
-	ret = mcctrl_ikc_send_wait(os, cpu, &isp, -1000, NULL, &do_free, 1, ldesc);
+	/* 10 secs (busy-wait) timeout for the case where McKernel can't respond */
+	ret = mcctrl_ikc_send_wait(os, cpu, &isp, -10000, NULL, &do_free, 1, ldesc);
 	if (ret != 0) {
 		printk("%s: ERROR sending IKC msg: %d\n", __FUNCTION__, ret);
 		goto out;