--- a/hooks/syncschema.py	Thu Sep 24 12:18:00 2015 +0200
+++ b/hooks/syncschema.py	Tue Nov 24 16:00:06 2015 +0100
@@ -1,4 +1,4 @@
-# copyright 2003-2014 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
+# copyright 2003-2015 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
 # contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
 #
 # This file is part of CubicWeb.
@@ -648,8 +648,7 @@
         if 'indexed' in self.values:
             syssource.update_rdef_indexed(cnx, rdef)
             self.indexed_changed = True
-        if 'cardinality' in self.values and (rdef.rtype.final or
-                                             rdef.rtype.inlined) \
+        if 'cardinality' in self.values and rdef.rtype.final \
               and self.values['cardinality'][0] != self.oldvalues['cardinality'][0]:
             syssource.update_rdef_null_allowed(self.cnx, rdef)
             self.null_allowed_changed = True

--- a/server/test/unittest_migractions.py	Thu Sep 24 12:18:00 2015 +0200
+++ b/server/test/unittest_migractions.py	Tue Nov 24 16:00:06 2015 +0100
@@ -22,6 +22,7 @@
 from contextlib import contextmanager
 
 from logilab.common.testlib import unittest_main, Tags, tag
+from logilab.common import tempattr
 
 from yams.constraints import UniqueConstraint
 
@@ -720,6 +721,18 @@
             self.assertEqual(tel, 1.0)
             self.assertIsInstance(tel, float)
 
+    def test_drop_required_inlined_relation(self):
+        with self.mh() as (cnx, mh):
+            bob = mh.cmd_create_entity('Personne', nom=u'bob')
+            note = mh.cmd_create_entity('Note', ecrit_par=bob)
+            mh.commit()
+            rdef = mh.fs_schema.rschema('ecrit_par').rdefs[('Note', 'Personne')]
+            with tempattr(rdef, 'cardinality', '1*'):
+                mh.sync_schema_props_perms('ecrit_par', syncperms=False)
+            mh.cmd_drop_relation_type('ecrit_par')
+            self.assertNotIn('%secrit_par' % SQL_PREFIX,
+                             self.table_schema(mh, '%sPersonne' % SQL_PREFIX))
+
 
 class MigrationCommandsComputedTC(MigrationTC):
     """ Unit tests for computed relations and attributes