diff --git a/src/config.cpp b/src/config.cpp
index 2f57b168148e26c8a5c90400c5bcfa2e45a5378a..432fb86f6f2e010bbf0b689ed04f02867e0c9c09 100644
--- a/src/config.cpp
+++ b/src/config.cpp
@@ -288,6 +288,7 @@ void Config::updateBackendConfig(const std::string &backendConfig) {
 	options_description opts("Backend options");
 	opts.add_options()
 		("registration.needPassword", value<bool>()->default_value(true), "")
+		("registration.needRegistration", value<bool>()->default_value(false), "")
 		("registration.extraField", value<std::vector<std::string> >()->multitoken(), "")
 	;