diff --git a/test/bats/test-device-connection/test-device-authorization.bats b/test/bats/test-device-connection/test-device-authorization.bats
index beca1465..b7b92683 100644
--- a/test/bats/test-device-connection/test-device-authorization.bats
+++ b/test/bats/test-device-connection/test-device-authorization.bats
@@ -23,10 +23,9 @@ DEVICE_ID="testdevice"
 DEVICE_ID2="testdevice2"
 DEVICE_TOKEN_SCOPE="device_id gateway mqtt-broker offline_access subdevice_ids"
 DEVICE_TOKEN_AUDIENCE_FROM_DIRECT='mqtt-broker'
-SUBDEVICE_ID=testsubdevice1
 SUBDEVICE_IDS='"[\"testsubdevice1\"]"'
+# shellcheck disable=SC2089
 SUBDEVICE_IDS2='"[\"testsubdevice1\",\"testsubdevice2\",\"testsubdevice3\"]"'
-MQTT_URL=emqx-listeners:1883
 MQTT_TOPIC_NAME="spBv1.0/${NAMESPACE}/DDATA/${GATEWAY_ID}/${DEVICE_ID}"
 MQTT_SUBDEVICE_TOPIC_NAME="spBv1.0/${NAMESPACE}/DDATA/${GATEWAY_ID}/testsubdevice1"
 MQTT_SUBDEVICE_TOPIC_NAME2="spBv1.0/${NAMESPACE}/DDATA/${GATEWAY_ID}/testsubdevice2"
@@ -170,7 +169,7 @@ check_refreshed_device_token_with_subcomponents() {
     check_json_field "${jwt}" "azp" "device" || return 1
     check_json_field "${jwt}" "device_id" "${DEVICE_ID}" || return 1
     check_json_field "${jwt}" "gateway" "${GATEWAY_ID}" || return 1
-    check_json_field "${jwt}" "subdevice_ids" $(echo "${SUBDEVICE_IDS}"| tr -d '"') || return 1
+    check_json_field "${jwt}" "subdevice_ids" "$(echo "${SUBDEVICE_IDS}"| tr -d '\"')" || return 1
     check_device_token_scope "${jwt}" || return 1
     check_vanilla_device_token_audience "${jwt}" || return 1
 }
@@ -180,7 +179,7 @@ check_refreshed_device_token_with_subcomponents2() {
     check_json_field "${jwt}" "azp" "device" || return 1
     check_json_field "${jwt}" "device_id" "${DEVICE_ID}" || return 1
     check_json_field "${jwt}" "gateway" "${GATEWAY_ID}" || return 1
-    check_json_field "${jwt}" "subdevice_ids" $(echo "${SUBDEVICE_IDS2}"| tr -d '"') || return 1
+    check_json_field "${jwt}" "subdevice_ids" "$(echo "${SUBDEVICE_IDS2}"| tr -d '\"')" || return 1
     check_device_token_scope "${jwt}" || return 1
     check_vanilla_device_token_audience "${jwt}" || return 1
 }