diff --git a/management/univention-management-console/src/univention/management/console/protocol/session.py b/management/univention-management-console/src/univention/management/console/protocol/session.py
index cbdcd4e..1a16405 100644
--- a/management/univention-management-console/src/univention/management/console/protocol/session.py
+++ b/management/univention-management-console/src/univention/management/console/protocol/session.py
@@ -530,6 +530,10 @@ def handle_request_set(self, msg):
 					self.set_language('C')
 					self.i18n.set_locale('C')
 					break
+				else:
+					for module_name, proc in self.__processes.items():
+						req = Request('SET', arguments=[module_name], options={'locale': value})
+						proc.request(req)
 			elif key == 'user' and isinstance(value, dict) and 'preferences' in value:
 				try:
 					# make sure we got a dict