diff --git a/lib/server/mellow.js b/lib/server/mellow.js
index 635e933a..f1dfb52e 100644
--- a/lib/server/mellow.js
+++ b/lib/server/mellow.js
@@ -31,7 +31,7 @@
                 data.files = volumes.map(function(volume) {
                     return {
                         name: volume,
-                        size: 0,
+                        size: 'dir',
                         mode: 0,
                         owner: 0
                     };