diff --git a/trytond/ir/model.py b/trytond/ir/model.py
index a09bf8b690..9a11bef363 100644
--- a/trytond/ir/model.py
+++ b/trytond/ir/model.py
@@ -115,9 +115,9 @@ class Model(ModelSQL, ModelView):
         Property._models_get_cache.clear()
 
     @classmethod
-    def global_search(cls, text, limit):
+    def global_search(cls, text, limit, menu='ir.ui.menu'):
         """
-        Search on models for text
+        Search on models for text including menu
         Returns a list of tuple (ratio, model, model_name, id, rec_name, icon)
         The size of the list is limited to limit
         """
@@ -129,7 +129,7 @@ class Model(ModelSQL, ModelView):
 
         models = cls.search(['OR',
                 ('global_search_p', '=', True),
-                ('name', '=', 'ir.ui.menu'),
+                ('model', '=', menu),
                 ])
         access = ModelAccess.get_access([m.model for m in models])
         s = StringMatcher()
diff --git a/trytond/model/modelsingleton.py b/trytond/model/modelsingleton.py
index ab23571f50..3f2af20260 100644
--- a/trytond/model/modelsingleton.py
+++ b/trytond/model/modelsingleton.py
@@ -36,7 +36,7 @@ class ModelSingleton(ModelStorage):
                     + cls._inherit_fields.keys()))
             for field_name in fields_names:
                 if field_name not in res:
-                    res[field_name] = False
+                    res[field_name] = None
             res['id'] = ids[0]
             return [res]
         res = super(ModelSingleton, cls).read([singleton.id],
diff --git a/trytond/modules/__init__.py b/trytond/modules/__init__.py
index 0df44940c5..b9bdd948ed 100644
--- a/trytond/modules/__init__.py
+++ b/trytond/modules/__init__.py
@@ -269,21 +269,6 @@ def load_module_graph(graph, pool, lang=None):
 
         cursor.commit()
 
-    # Create missing reports
-    from trytond.report import Report
-    ActionReport = pool.get('ir.action.report')
-    reports = ActionReport.search([
-            ('module', '=', module),
-            ])
-    report_names = pool.object_name_list(type='report')
-    for report in reports:
-        report_name = report.report_name
-        if report_name not in report_names:
-            report = object.__new__(Report)
-            report.__name__ = report_name
-            pool.add(report, type='report')
-            report.__init__()
-
     for model_name in models_to_update_history:
         model = pool.get(model_name)
         if model._history:
diff --git a/trytond/tests/test_modelsingleton.py b/trytond/tests/test_modelsingleton.py
index 075a12fd4b..3b4bad23c9 100644
--- a/trytond/tests/test_modelsingleton.py
+++ b/trytond/tests/test_modelsingleton.py
@@ -40,8 +40,8 @@ class ModelSingletonTestCase(unittest.TestCase):
                 ])
             self.assertEqual(singleton['create_uid'], USER)
             self.assert_(isinstance(singleton['create_date'], datetime))
-            self.assertEqual(singleton['write_uid'], False)
-            self.assertEqual(singleton['write_date'], False)
+            self.assertEqual(singleton['write_uid'], None)
+            self.assertEqual(singleton['write_date'], None)
 
             transaction.cursor.rollback()