1 files changed, 1 insertions, 0 deletions
diff --git a/lib/server.js b/lib/server.js
index c8d5931..4f1cbbd 100644
--- a/lib/server.js
+++ b/lib/server.js
@@ -37,6 +37,7 @@ function Server (torrent, opts) {
     })
 
     // Only call `server.close` if user has not called it already
+    if (!cb) cb = function () {}
     if (closed) process.nextTick(cb)
     else server.close(cb)
   }