diff --git a/src/applications/conduit/method/conduit/connect/ConduitAPI_conduit_connect_Method.php b/src/applications/conduit/method/conduit/connect/ConduitAPI_conduit_connect_Method.php
index 02b4712347..cfadd87066 100644
--- a/src/applications/conduit/method/conduit/connect/ConduitAPI_conduit_connect_Method.php
+++ b/src/applications/conduit/method/conduit/connect/ConduitAPI_conduit_connect_Method.php
@@ -102,7 +102,8 @@ class ConduitAPI_conduit_connect_Method extends ConduitAPIMethod {
         }
         break;
       default:
-        throw new ConduitException('ERR-UNKNOWN-CLIENT');
+        // Allow new clients by default.
+        break;
     }
 
     $token = $request->getValue('authToken');
diff --git a/src/applications/conduit/method/conduit/connect/__init__.php b/src/applications/conduit/method/conduit/connect/__init__.php
index 6906e56c9f..94a6716784 100644
--- a/src/applications/conduit/method/conduit/connect/__init__.php
+++ b/src/applications/conduit/method/conduit/connect/__init__.php
@@ -10,6 +10,7 @@ phutil_require_module('phabricator', 'applications/conduit/method/base');
 phutil_require_module('phabricator', 'applications/conduit/protocol/exception');
 phutil_require_module('phabricator', 'applications/conduit/storage/connectionlog');
 phutil_require_module('phabricator', 'applications/people/storage/user');
+phutil_require_module('phabricator', 'infrastructure/env');
 phutil_require_module('phabricator', 'storage/queryfx');
 
 phutil_require_module('phutil', 'utils');