diff --git a/dsl-cpe-api-vrx/files/ltq_load_dsl_cpe_api.sh b/dsl-cpe-api-vrx/files/ltq_load_dsl_cpe_api.sh
index 43c70c4b911ac596fed876ccbaaa1b371bc0cc15..34885fc35f88aa52785a8d67021410d6485143c5 100644
--- a/dsl-cpe-api-vrx/files/ltq_load_dsl_cpe_api.sh
+++ b/dsl-cpe-api-vrx/files/ltq_load_dsl_cpe_api.sh
@@ -88,7 +88,8 @@ stop() {
          :
       fi
    fi
-
+#give userspace app enough time to release driver,otherwise, unload driver fail
+	sleep 5
    if [ ${bDisableAllLines} -eq 1 ]; then
       rmmod drv_dsl_cpe_api
    fi