diff --git a/oaf/src/af_utils.c b/oaf/src/af_utils.c
index 8473a07..bfd9c90 100755
--- a/oaf/src/af_utils.c
+++ b/oaf/src/af_utils.c
@@ -10,7 +10,7 @@ u_int32_t af_get_timestamp_sec(void)
 {
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4,17,0)
 	struct timespec64 ts;
-	ktime_get_ts64(&ts);
+	ktime_get_real_ts64(&ts);
 	return (u_int32_t)ts.tv_sec;
 #else
 	struct timespec ts;