diff --git a/docs/examples/custom_convert.py b/docs/examples/custom_convert.py
index 3c335aba..49ab739a 100644
--- a/docs/examples/custom_convert.py
+++ b/docs/examples/custom_convert.py
@@ -5,7 +5,11 @@ from pathlib import Path
 
 from docling.backend.pypdfium2_backend import PyPdfiumDocumentBackend
 from docling.datamodel.base_models import InputFormat
-from docling.datamodel.pipeline_options import AcceleratorDevice, AcceleratorOptions, PdfPipelineOptions
+from docling.datamodel.pipeline_options import (
+    AcceleratorDevice,
+    AcceleratorOptions,
+    PdfPipelineOptions,
+)
 from docling.document_converter import DocumentConverter, PdfFormatOption
 from docling.models.ocr_mac_model import OcrMacOptions
 from docling.models.tesseract_ocr_cli_model import TesseractCliOcrOptions