diff --git a/lib/mbtiles.js b/lib/mbtiles.js
index 037cba6..8dfdcc9 100644
--- a/lib/mbtiles.js
+++ b/lib/mbtiles.js
@@ -53,6 +53,7 @@ function MBTiles(uri, callback) {
 
     var key = url.format(uri);
     if (!cache[key]) {
+        this.setMaxListeners(0);
         cache[key] = this;
         this._open(uri);
     }