diff --git a/src/pcsc_server.rb b/src/pcsc_server.rb
index eedecd7..9f1b2e0 100644
--- a/src/pcsc_server.rb
+++ b/src/pcsc_server.rb
@@ -82,6 +82,7 @@ class PCSCServer < Server
     return true
   end
   
+  # release card and context
   def disconnect
     @card.disconnect
     @context.release