diff --git a/syscall/time_syscall.c b/syscall/time_syscall.c
index e433e2de..ea87f298 100644
--- a/syscall/time_syscall.c
+++ b/syscall/time_syscall.c
@@ -356,13 +356,18 @@ int SysNanoSleep(const struct timespec *rqtp, struct timespec *rmtp)
 {
     int ret;
     struct timespec srqtp;
-    struct timespec srmtp = { 0 };
+    struct timespec srmtp;
 
     if (!rqtp || LOS_ArchCopyFromUser(&srqtp, rqtp, sizeof(struct timespec))) {
         errno = EFAULT;
         return -EFAULT;
     }
 
+    if (rmtp && LOS_ArchCopyFromUser(&srmtp, rmtp, sizeof(struct timespec))) {
+        errno = EFAULT;
+        return -EFAULT;
+    }
+
     ret = nanosleep(&srqtp, rmtp ? &srmtp : NULL);
     if (ret < 0) {
         return -get_errno();