diff --git a/ucs-school-umc-wizards/umc/python/schoolwizards/__init__.py b/ucs-school-umc-wizards/umc/python/schoolwizards/__init__.py
index 50256d3..ab5e282 100644
--- a/ucs-school-umc-wizards/umc/python/schoolwizards/__init__.py
+++ b/ucs-school-umc-wizards/umc/python/schoolwizards/__init__.py
@@ -38,7 +38,7 @@ from univention.lib.i18n import Translation
 from univention.management.console.log import MODULE
 from univention.management.console.modules.decorators import simple_response, sanitize
 from univention.management.console.modules.sanitizers import StringSanitizer
-from univention.admin.uexceptions import base as uldapBaseException
+from univention.admin.uexceptions import base as uldapBaseException, noObject
 import univention.admin.modules as udm_modules
 
 from ucsschool.lib.schoolldap import SchoolBaseModule, LDAP_Connection, USER_READ, USER_WRITE
@@ -228,7 +228,10 @@ class Instance(SchoolBaseModule, SchoolImport):
 			schools = School.from_binddn(lo)
 		objs = []
 		for school in schools:
-			objs.extend(klass.get_all(lo, school.name, filter_str=filter_str, easy_filter=True))
+			try:
+				objs.extend(klass.get_all(lo, school.name, filter_str=filter_str, easy_filter=True))
+			except noObject:
+				pass
 		return [obj.to_dict() for obj in objs]
 
 	@response