diff --git a/Procfile b/Procfile
index 489b270..186c82b 100644
--- a/Procfile
+++ b/Procfile
@@ -1 +1 @@
-web: node server.js
+web:node server.js
diff --git a/api/routes/messages.js b/api/routes/messages.js
index 689951b..f048eba 100644
--- a/api/routes/messages.js
+++ b/api/routes/messages.js
@@ -11,6 +11,6 @@ router.post('/', authCheck, msgControl.sendMessage);
 
 router.get('/sent', authCheck, msgControl.getSent);
 
-router.get('/:msgid', authCheck, sgControl.getMessage);
+router.get('/:msgid', authCheck, msgControl.getMessage);
 
 module.exports = router;
\ No newline at end of file
diff --git a/app.js b/app.js
index 5f1901f..791be80 100644
--- a/app.js
+++ b/app.js
@@ -8,14 +8,17 @@ const itemRoutes = require('./api/routes/items');
 const userRoutes = require('./api/routes/user');
 const msgRoutes = require('./api/routes/messages');
 
+//Method to connect the API to an existing MongoDB database
 mongoose.connect(
     'mongodb+srv://Caracold:304CEM-resit@cluster0-kbwm8.mongodb.net/test?retryWrites=true&w=majority', { useNewUrlParser: true, useUnifiedTopology: true })
 
+//Setting dependencies for parsing and setting the uploads folder to public to allow access to image files.
 app.use(morgan('dev'));
 app.use('/uploads', express.static('uploads'));
 app.use(bodyParser.urlencoded({ extended: false }));
 app.use(bodyParser.json());
 
+//Middleware setting permissions to avoid browser-related errors
 app.use((req, res, next) => {
     res.header('Access-Control-Allow-Origin', '*');
     res.header('Access-Control-Allow-Headers', 'Origin, X-Requested-With, Content-Type, Accept, Authorization');
@@ -26,6 +29,7 @@ app.use((req, res, next) => {
     next();
 });
 
+//Ensuring a browser that reaches the API's homepage is redirected to an existing route
 app.get('/', function(req, res) {
     res.redirect('/itemlist');
 });
@@ -34,6 +38,7 @@ app.use('/itemlist', itemRoutes);
 app.use('/user', userRoutes);
 app.use('/inbox', msgRoutes);
 
+//Catch inexistent routes with a 404 error
 app.use((req, res, next) => {
     const error = new Error('Address not found');
     error.status = 404;