diff --git a/mis_builder/models/kpimatrix.py b/mis_builder/models/kpimatrix.py
index dc23b12a7..f34385de1 100644
--- a/mis_builder/models/kpimatrix.py
+++ b/mis_builder/models/kpimatrix.py
@@ -469,7 +469,7 @@ def _load_account_names(self):
     def _get_account_name(self, account):
         result = f"{account.code} {account.name}"
         if self._multi_company:
-            result = f"{result} [{account.company_id.name}]"
+            result = f"{result} [{account.company_ids[0].name}]"
         return result
 
     def get_account_name(self, account_id):
diff --git a/mis_builder/tests/test_mis_report_instance.py b/mis_builder/tests/test_mis_report_instance.py
index 7177e65dd..b0c2ed861 100644
--- a/mis_builder/tests/test_mis_report_instance.py
+++ b/mis_builder/tests/test_mis_report_instance.py
@@ -383,7 +383,7 @@ def test_multi_company_compute(self):
                 account = self.env["account.account"].browse(row.account_id)
                 self.assertEqual(
                     row.label,
-                    f"{account.code} {account.name} [{account.company_id.name}]",
+                    f"{account.code} {account.name} [{account.company_ids[0].name}]",
                 )
         self.report_instance.write({"multi_company": False})
         matrix = self.report_instance._compute_matrix()