diff --git a/docker-compose.yml b/docker-compose.yml
index 699a9dc..b9171c0 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -19,7 +19,7 @@ services:
     depends_on: 
       - server-database
     environment:
-      - DATABASE_URL=server-database
+      - DATABASE_URL=server-database:27017
     
   server-database:
     image: mongo
diff --git a/server/src/app.js b/server/src/app.js
index 00963a6..436818f 100644
--- a/server/src/app.js
+++ b/server/src/app.js
@@ -14,7 +14,7 @@ app.use(cors())
 var mongoose = require('mongoose');
 
 var DATABASE_URL = process.env.DATABASE_URL || 'http://localhost'
-mongoose.connect(`mongodb://${DATABASE_URL}:27017/posts`);
+mongoose.connect(`mongodb://${DATABASE_URL}/posts`);
 
 var db = mongoose.connection;
 db.on("error", console.error.bind(console, "connection error"));