diff --git a/runbot_merge/tests/remote.py b/runbot_merge/tests/remote.py
index c73ef330..6c57827b 100644
--- a/runbot_merge/tests/remote.py
+++ b/runbot_merge/tests/remote.py
@@ -303,6 +303,10 @@ class Model:
 
         object.__setattr__(self, '_fields', fields or self._env(self._model, 'fields_get', attributes=['type', 'relation']))
 
+    @property
+    def ids(self):
+        return self._ids
+
     def __bool__(self):
         return bool(self._ids)
 
diff --git a/runbot_merge/tests/test_multirepo.py b/runbot_merge/tests/test_multirepo.py
index 5566f330..b06a704e 100644
--- a/runbot_merge/tests/test_multirepo.py
+++ b/runbot_merge/tests/test_multirepo.py
@@ -172,8 +172,7 @@ def test_merge_fail(env, project, repo_a, repo_b, users):
 
     s2 = to_pr(env, pr2a) | to_pr(env, pr2b)
     st = env['runbot_merge.stagings'].search([])
-    assert st
-    assert st.batch_ids.prs == s2
+    assert set(st.batch_ids.prs.ids) == set(s2.ids)
 
     failed = to_pr(env, pr1b)
     assert failed.state == 'error'