diff --git a/xen-all.c b/xen-all.c
index d1fc597..bf183f7 100644
--- a/xen-all.c
+++ b/xen-all.c
@@ -513,6 +513,7 @@ void xen_vcpu_init(void)
         qemu_register_reset(xen_reset_vcpu, first_cpu);
         xen_reset_vcpu(first_cpu);
     }
+    qemu_clock_enable(rtc_clock, false);
 }
 
 /* get the ioreq packets from share mem */