diff --git a/intrastat_base/models/intrastat_common.py b/intrastat_base/models/intrastat_common.py
index 00ac4b1..45ad7c6 100644
--- a/intrastat_base/models/intrastat_common.py
+++ b/intrastat_base/models/intrastat_common.py
@@ -148,7 +148,7 @@ class IntrastatCommon(models.AbstractModel):
                     _("Cannot delete the declaration %s " "because it is in Done state")
                     % self.year_month
                 )
-        return super(IntrastatCommon, self).unlink()
+        return super().unlink()
 
 
 class IntrastatResultView(models.TransientModel):