diff --git a/index.js b/index.js
index 9f8648b..2e9f643 100644
--- a/index.js
+++ b/index.js
@@ -85,10 +85,17 @@ app.post('/api/upload', (req, res) => {
     }
 
     const file = req.files.file;
+    const filepath = `${config.storagePath}/${file.name}`;
 
-    file.mv(`${config.storagePath}/${file.name}`, function(err) {
-        if (err) return res.status(500).send(err);
-        res.render('uploaded', { file: { name: file.name } });
+    path.exists(filepath, (exists) => { 
+        if (!exists) { 
+            file.mv(filepath, (err) => {
+                if (err) return res.status(500).send(err);
+                res.render('uploaded', { file: { name: file.name } });
+            });
+        } else {
+            return res.status(400).send('File exists.');
+        }
     });
 });