diff --git a/.gitignore b/.gitignore
index f1e1d9ba..f361a166 100644
--- a/.gitignore
+++ b/.gitignore
@@ -28,3 +28,4 @@ test_scripts/curl/result.json
 *.swp
 helm/charts/*
 !helm/charts/.gitkeep
+/portal-test/
diff --git a/src/RESTAPI/RESTAPI_devices_handler.cpp b/src/RESTAPI/RESTAPI_devices_handler.cpp
index 9cfc5870..bb880fbc 100644
--- a/src/RESTAPI/RESTAPI_devices_handler.cpp
+++ b/src/RESTAPI/RESTAPI_devices_handler.cpp
@@ -98,7 +98,7 @@ namespace OpenWifi {
 		if (!QB_.Select.empty()) {
 			Poco::JSON::Array Objects;
 			for (auto &i : SelectedRecords()) {
-				auto SerialNumber = i;
+				auto &SerialNumber = i;
 				if (!Utils::ValidSerialNumber(i))
 					continue;
 				GWObjects::Device D;