diff --git a/letsencrypt/client/cli.py b/letsencrypt/client/cli.py
index 2035a00db..7f54afebe 100644
--- a/letsencrypt/client/cli.py
+++ b/letsencrypt/client/cli.py
@@ -168,10 +168,10 @@ def config_changes(unused_args, config, unused_plugins):
 
 def plugins_cmd(args, config, plugins):  # TODO: Use IDiplay rathern than print
     """List plugins."""
-    logging.debug("Discovered plugins: %s", plugins)
+    logging.debug("Expected interfaces: %s", args.ifaces)
 
     ifaces = [] if args.ifaces is None else args.ifaces
-    filtered = plugins.ifaces(*((iface,) for iface in ifaces))
+    filtered = plugins.ifaces(ifaces)
     logging.debug("Filtered plugins: %r", filtered)
 
     if not args.init and not args.prepare:
@@ -352,6 +352,8 @@ def main(args=sys.argv[1:]):
     if args.use_curses:
         logger.addHandler(log.DialogHandler())
 
+    logging.debug("Discovered plugins: %r", plugins)
+
     if not os.geteuid() == 0:
         logging.warning(
             "Root (sudo) is required to run most of letsencrypt functionality.")
diff --git a/letsencrypt/client/tests/cli_test.py b/letsencrypt/client/tests/cli_test.py
index 271b9c5aa..bd25a9792 100644
--- a/letsencrypt/client/tests/cli_test.py
+++ b/letsencrypt/client/tests/cli_test.py
@@ -28,7 +28,6 @@ class CLITest(unittest.TestCase):
         for args in itertools.chain(
                 *(itertools.combinations(flags, r)
                   for r in xrange(len(flags)))):
-            print args
             self._call(['plugins',] + list(args))