thodg/mpd_client

diff --git a/lib/mpd_client.rb b/lib/mpd_client.rb
index 063ffb2..28f5779 100644
--- a/lib/mpd_client.rb
+++ b/lib/mpd_client.rb
@@ -166,7 +166,7 @@ class MPDClient
   end
 
   def disconnect
-    log.info("MPD disconnect")
+    log.info("MPD disconnect") if log
     @socket.close
     reset
   end