diff --git a/mass_mailing_custom_unsubscribe/models/mail_unsubscription.py b/mass_mailing_custom_unsubscribe/models/mail_unsubscription.py
index 7fd4112b3..8aab83d97 100644
--- a/mass_mailing_custom_unsubscribe/models/mail_unsubscription.py
+++ b/mass_mailing_custom_unsubscribe/models/mail_unsubscription.py
@@ -86,12 +86,13 @@ class MailUnsubscription(models.Model):
                     _("Please provide details on why you are unsubscribing.")
                 )
 
-    @api.model
-    def create(self, vals):
-        # No reasons for subscriptions
-        if vals.get("action") in {"subscription", "blacklist_rm"}:
-            vals = dict(vals, reason_id=False, details=False)
-        return super().create(vals)
+    @api.model_create_multi
+    def create(self, vals_list):
+        for vals in vals_list:
+            # No reasons for subscriptions
+            if vals.get("action") in {"subscription", "blacklist_rm"}:
+                vals = dict(vals, reason_id=False, details=False)
+        return super().create(vals_list)
 
 
 class MailUnsubscriptionReason(models.Model):