diff --git a/nanomq/rest_api.c b/nanomq/rest_api.c
index 1f670e946..3ee593b8c 100644
--- a/nanomq/rest_api.c
+++ b/nanomq/rest_api.c
@@ -3707,6 +3707,8 @@ post_mqtt_bridge_unsub(http_msg *msg, const char *name)
 					node->sub_count--;
 					nng_free(sub_topic->remote_topic,
 					    sub_topic->remote_topic_len);
+					nng_free(sub_topic->local_topic,
+					    sub_topic->local_topic_len);
 					nng_free(sub_topic, sizeof(topics));
 					break;
 				}
diff --git a/nanomq/tests/http_server_test.c b/nanomq/tests/http_server_test.c
index f6361f320..5283c595b 100644
--- a/nanomq/tests/http_server_test.c
+++ b/nanomq/tests/http_server_test.c
@@ -299,8 +299,8 @@ test_put_bridges_unsub()
 	            "'http://localhost:8081/api/v4/bridges/unsub/emqx' "
 	            "--basic -u admin_test:pw_test -d '{"
 	            "\"data\": {"
-	            "\"unsubscription\": [{\"remote_topic\": \"cmd/topic1\", \"local_topic\": \"cmd_lo/topic1\"},"
-				"{\"remote_topic\": \"cmd/topic2\", \"local_topic\": \"cmd_lo/topic2\"}],"
+	            "\"unsubscription\": [{\"topic\": \"cmd/topic1\"},"
+				"{\"topic\": \"cmd/topic2\"}],"
 	            "\"unsub_properties\": {\"user_properties\": [{\"key\": "
 	            "\"key1\",\"value\": \"value1\"},{\"key\": "
 	            "\"key2\",\"value\": \"value2\"}]}}}'";
@@ -639,9 +639,8 @@ main()
 
 	assert(test_get_bridges());
 	assert(test_get_bridge());
-	// TODO: rest api need change for topic reflection in bridge.
 	assert(test_put_bridges_sub());
-	// assert(test_put_bridges_unsub()); // bridge unsub has to change for topic reflection
+	assert(test_put_bridges_unsub()); // the usage of unsub rest api may need further discussion.
 	assert(test_put_bridges());
 
 	assert(test_post_rules());