diff --git a/account_financial_report/models/account_group.py b/account_financial_report/models/account_group.py
index 726765cd..45938cc5 100644
--- a/account_financial_report/models/account_group.py
+++ b/account_financial_report/models/account_group.py
@@ -16,6 +16,7 @@ class AccountGroup(models.Model):
     )
     compute_account_ids = fields.Many2many(
         "account.account",
+        recursive=True,
         compute="_compute_group_accounts",
         string="Compute accounts",
         store=True,
@@ -58,16 +59,11 @@ class AccountGroup(models.Model):
                 group.level = group.parent_id.level + 1
 
     @api.depends(
-        "code_prefix_start",
         "account_ids",
-        "account_ids.code",
-        "group_child_ids",
-        "group_child_ids.account_ids.code",
+        "group_child_ids.compute_account_ids",
     )
     def _compute_group_accounts(self):
-        account_obj = self.env["account.account"]
-        accounts = account_obj.search([])
-        for group in self:
-            prefix = group.code_prefix_start if group.code_prefix_start else group.name
-            gr_acc = accounts.filtered(lambda a: a.code.startswith(prefix)).ids
-            group.compute_account_ids = [(6, 0, gr_acc)]
+        for one in self:
+            one.compute_account_ids = (
+                one.account_ids | one.group_child_ids.compute_account_ids
+            )