diff --git a/sleekxmpp/test/sleektest.py b/sleekxmpp/test/sleektest.py
index 8a7caa0..ce10562 100644
--- a/sleekxmpp/test/sleektest.py
+++ b/sleekxmpp/test/sleektest.py
@@ -294,6 +294,7 @@ class SleekTest(unittest.TestCase):
         else:
             raise ValueError("Unknown socket type.")
 
+        self.xmpp.register_plugins()
         self.xmpp.process(threaded=True)
         if skip:
             # Clear startup stanzas