diff --git a/document_page_reference/models/document_page.py b/document_page_reference/models/document_page.py
index 0fa4b68b750..d95c8e9e252 100644
--- a/document_page_reference/models/document_page.py
+++ b/document_page_reference/models/document_page.py
@@ -39,7 +39,7 @@ def _check_reference_validity(self):
         for rec in self:
             if not rec.reference:
                 continue
-            regex = r"^[a-zA-Z_][a-zA-Z0-9_]*$"
+            regex = r"^[a-zA-Z_][a-zA-Z0-9_-]*$"
             if not re.match(regex, rec.reference):
                 raise ValidationError(_("Reference is not valid"))
             domain = [("reference", "=", rec.reference), ("id", "!=", rec.id)]
diff --git a/document_page_tag/models/document_page_tag.py b/document_page_tag/models/document_page_tag.py
index cb5bf89b82e..dae62d6aea5 100644
--- a/document_page_tag/models/document_page_tag.py
+++ b/document_page_tag/models/document_page_tag.py
@@ -15,10 +15,14 @@ class DocumentPageTag(models.Model):
         ("unique_name", "unique(name)", "Tags must be unique"),
     ]
 
-    @api.model
-    def create(self, vals):
+    @api.model_create_multi
+    def create(self, vals_list):
         """Be nice when trying to create duplicates"""
-        existing = self.search([("name", "=ilike", vals["name"])], limit=1)
-        if existing:
-            return existing
-        return super().create(vals)
+        result = self.env['document.page.tag']
+        for vals in vals_list:
+            existing = self.search([("name", "=ilike", vals.get("name", ""))], limit=1)
+            if existing:
+                result |= existing
+            else:
+                result |= super(DocumentPageTag, self).create(vals)
+        return result