diff --git a/frontend/.gitignore b/frontend/.gitignore
new file mode 100644
index 0000000..1ebdc24
--- /dev/null
+++ b/frontend/.gitignore
@@ -0,0 +1,2 @@
+shared/constants.js
+
diff --git a/frontend/shared/constants.example.js b/frontend/shared/constants.example.js
new file mode 100644
index 0000000..440c1b3
--- /dev/null
+++ b/frontend/shared/constants.example.js
@@ -0,0 +1,3 @@
+//export const address = "https://temperature.mercantec.tech/api"
+export const address = "http://localhost:5000/api";
+
diff --git a/frontend/shared/constants.js b/frontend/shared/constants.js
deleted file mode 100644
index a21da0c..0000000
--- a/frontend/shared/constants.js
+++ /dev/null
@@ -1 +0,0 @@
-export const address = "hhttps://temperature.mercantec.tech/api"