diff --git a/lib/mbtiles.js b/lib/mbtiles.js
index fdb6b8f..c62cece 100644
--- a/lib/mbtiles.js
+++ b/lib/mbtiles.js
@@ -4,6 +4,7 @@ var _ = require('underscore'),
     crypto = require('crypto'),
     zlib = require('zlib'),
     get = require('get'),
+    path = require('path'),
     sm = new (require('sphericalmercator')),
     sqlite3 = require('sqlite3');