diff --git a/management/univention-directory-reports/modules/univention/directory/reports/interpreter.py b/management/univention-directory-reports/modules/univention/directory/reports/interpreter.py
index b8a7bd95f6..e919326c4c 100644
--- a/management/univention-directory-reports/modules/univention/directory/reports/interpreter.py
+++ b/management/univention-directory-reports/modules/univention/directory/reports/interpreter.py
@@ -112,7 +112,8 @@ def resolve(self, token, base):
 					values = [values, ]
 				for value in values:
 					new_base = admin.get_object(token.attrs['module'], value)
-					token.objects.append(new_base)
+					if new_base:
+						token.objects.append(new_base)
 
 	def query(self, token, base):
 		if 'module' in token.attrs:
@@ -135,6 +136,8 @@ def _query_recursive(self, objects, attr, module, filter=None, regex=None):
 		_objs = []
 		for dn in objects:
 			obj = admin.get_object(module, dn)
+			if not obj:
+				continue
 			if not filter and not regex:
 				_objs.append(obj)
 			elif filter and obj.has_key(filter[0]) and obj[filter[0]] and fnmatch.fnmatch(obj[filter[0]], filter[1]):