diff --git a/syscall/ipc_syscall.c b/syscall/ipc_syscall.c
index 83ebac4b..ded9894c 100644
--- a/syscall/ipc_syscall.c
+++ b/syscall/ipc_syscall.c
@@ -94,9 +94,15 @@ int SysMqClose(mqd_t personal)
 int SysMqNotify(mqd_t personal, const struct sigevent *sigev)
 {
     int ret;
+    struct sigevent ksigev;
+
+    ret = LOS_ArchCopyFromUser(&ksigev, sigev, sizeof(struct sigevent));
+    if (ret != 0) {
+        return -EFAULT;
+    }
 
     MQUEUE_FD_U2K(personal);
-    ret = OsMqNotify(personal, sigev);
+    ret = OsMqNotify(personal, &ksigev);
     if (ret < 0) {
         return -get_errno();
     }