diff --git a/odoo-stubs/tools/pdf.pyi b/odoo-stubs/tools/pdf.pyi
index dd27223..5513dc1 100644
--- a/odoo-stubs/tools/pdf.pyi
+++ b/odoo-stubs/tools/pdf.pyi
@@ -9,8 +9,7 @@ DEFAULT_PDF_DATETIME_FORMAT: str
 def merge_pdf(pdf_data: Iterable[bytes]) -> bytes: ...
 
 class OdooPdfFileWriter(PdfFileWriter):
-    def __init__(self, *args, **kwargs):
-        None
+    def __init__(self, *args, **kwargs) -> None: ...
     def addAttachment(self, fname: str, fdata, subtype: str = ...) -> None: ...
     def cloneReaderDocumentRoot(self, reader: PdfFileReader) -> None: ...
     def convert_to_pdfa(self) -> None: ...