diff --git a/sleekxmpp/plugins/xep_0050/adhoc.py b/sleekxmpp/plugins/xep_0050/adhoc.py
index 0509f8c..7dbef31 100644
--- a/sleekxmpp/plugins/xep_0050/adhoc.py
+++ b/sleekxmpp/plugins/xep_0050/adhoc.py
@@ -17,6 +17,7 @@ from sleekxmpp.xmlstream import register_stanza_plugin, JID
 from sleekxmpp.plugins.base import base_plugin
 from sleekxmpp.plugins.xep_0050 import stanza
 from sleekxmpp.plugins.xep_0050 import Command
+from sleekxmpp.plugins.xep_0004 import Form
 
 
 log = logging.getLogger(__name__)
@@ -92,7 +93,8 @@ class xep_0050(base_plugin):
                          StanzaPath('iq@type=set/command'),
                          self._handle_command))
 
-        register_stanza_plugin(Iq, stanza.Command)
+        register_stanza_plugin(Iq, Command)
+        register_stanza_plugin(Command, Form)
 
         self.xmpp.add_event_handler('command_execute',
                                     self._handle_command_start,