diff --git a/example.nginx.conf b/example.nginx.conf
index 5067ca9c0..fcb8b7435 100644
--- a/example.nginx.conf
+++ b/example.nginx.conf
@@ -32,7 +32,7 @@ server {
     set $scriptSrc  "'self'";
     set $connectSrc "'self' wss://cryptpad.fr wss://api.cryptpad.fr";
     set $fontSrc    "'self'";
-    set $imgSrc     "data: *";
+    set $imgSrc     "data: * blob:";
     set $frameSrc   "'self' beta.cryptpad.fr";
 
     if ($uri = /pad/inner.html) {
@@ -65,8 +65,12 @@ server {
         rewrite ^.*$ /customize/api/config break;
     }
 
+    location ^~ /blob/ {
+        try_files $uri =404;
+    }
+
     ## TODO fix in the code so that we don't need this
-    location ~ ^/(register|login|settings|user|pad|drive|poll|slide|code|whiteboard)$ {
+    location ~ ^/(register|login|settings|user|pad|drive|poll|slide|code|whiteboard|file|media)$ {
         rewrite ^(.*)$ $1/ redirect;
     }
 
diff --git a/www/file/main.js b/www/file/main.js
index 7e193e6a9..ac5acdc84 100644
--- a/www/file/main.js
+++ b/www/file/main.js
@@ -89,6 +89,7 @@ define([
 
                             var newU8 = FileCrypto.joinChunks(chunks);
                             FileCrypto.decrypt(newU8, key, function (e, res) {
+                                if (e) { return console.error(e); }
                                 var title = document.title = res.metadata.name;
                                 myFile = res.content;
                                 myDataType = res.metadata.type;
@@ -218,12 +219,15 @@ define([
                 var key = Nacl.util.decodeBase64(cryptKey);
 
                 FileCrypto.decrypt(u8, key, function (e, data) {
+                    if (e) {
+                        Cryptpad.removeLoadingScreen();
+                        return console.error(e);
+                    }
                     console.log(data);
                     var title = document.title = data.metadata.name;
                     myFile = data.content;
                     myDataType = data.metadata.type;
                     updateTitle(title || defaultName);
-
                     Cryptpad.removeLoadingScreen();
                 });
             });