--- /usr/lib/pymodules/python2.7/univention/connector/ad/__init__.py.orig	2016-02-19 00:59:32.752000000 +0100
+++ /usr/lib/pymodules/python2.7/univention/connector/ad/__init__.py.orig	2016-02-19 01:01:04.728000000 +0100
@@ -2375,7 +2375,7 @@ 
 						if not ad_object.has_key(attr):
 							if value:
 								if attribute.ucs_value_map_function:
-									value = attribute.ucs_value_map_function(value, ad_object[attr])
+									value = attribute.ucs_value_map_function(value, ad_object.get(attr))
 								modlist.append((ldap.MOD_ADD, attr, value))
 						else:
 							if attribute.compare_function:
@@ -2400,7 +2400,7 @@ 
 						if not ad_object.has_key(attr):
 							if value:
 								if post_attribute.ucs_value_map_function:
-									value = post_attribute.ucs_value_map_function(value, ad_object[attr])
+									value = post_attribute.ucs_value_map_function(value, ad_object.get(attr))
 								modlist.append((ldap.MOD_ADD, attr, value))
 						else:
 							if post_attribute.compare_function: