diff --git a/backend/.env.example b/backend/.env.example
index 09c5a43..cacfd9e 100644
--- a/backend/.env.example
+++ b/backend/.env.example
@@ -1,5 +1,6 @@
 NODE_ENV=
-HOST=localhost
+BACKEND_URL=http://localhost
+PROXY_PORT=8080
 PORT=8080
 
 DB_HOST=
diff --git a/backend/src/controllers/MessageController.js b/backend/src/controllers/MessageController.js
index 064a2d1..49bcf68 100644
--- a/backend/src/controllers/MessageController.js
+++ b/backend/src/controllers/MessageController.js
@@ -90,7 +90,7 @@ exports.index = async (req, res, next) => {
 			...message.dataValues,
 			mediaUrl: `${
 				message.mediaUrl
-					? `http://${process.env.HOST}:${process.env.PORT}/public/${message.mediaUrl}`
+					? `${process.env.BACKEND_URL}:${process.env.PROXY_PORT}/public/${message.mediaUrl}`
 					: ""
 			}`,
 		};
@@ -157,7 +157,7 @@ exports.store = async (req, res, next) => {
 		...newMessage.dataValues,
 		mediaUrl: `${
 			message.mediaUrl
-				? `http://${process.env.HOST}:${process.env.PORT}/public/${message.mediaUrl}`
+				? `${process.env.BACKEND_URL}:${process.env.PROXY_PORT}/public/${message.mediaUrl}`
 				: ""
 		}`,
 	};
diff --git a/backend/src/services/wbotMessageListener.js b/backend/src/services/wbotMessageListener.js
index 99dab36..89d7f1e 100644
--- a/backend/src/services/wbotMessageListener.js
+++ b/backend/src/services/wbotMessageListener.js
@@ -114,7 +114,7 @@ const handleMessage = async (msg, ticket, contact) => {
 		...newMessage.dataValues,
 		mediaUrl: `${
 			newMessage.mediaUrl
-				? `http://${process.env.HOST}:${process.env.PORT}/public/${newMessage.mediaUrl}`
+				? `${process.env.BACKEND_URL}:${process.env.PROXY_PORT}/public/${newMessage.mediaUrl}`
 				: ""
 		}`,
 	};