diff --git a/l10n_br_sped_base/models/sped_mixin.py b/l10n_br_sped_base/models/sped_mixin.py
index bae11c81d073..53e4d3a7391f 100644
--- a/l10n_br_sped_base/models/sped_mixin.py
+++ b/l10n_br_sped_base/models/sped_mixin.py
@@ -66,7 +66,7 @@ def _compute_reference(self):
             if not res.res_model:
                 res.reference = ""
                 continue
-            model = self.env["ir.model"].search([("model", "=", self.res_model)])
+            model = self.env["ir.model"].search([("model", "=", res.res_model)])
             if not model:
                 raise UserError(
                     _("Undefined mapping model for Register %s and model")