diff --git a/src/paradoc/io/pdf/exporter.py b/src/paradoc/io/pdf/exporter.py
index 77eb83f..d1e5ace 100644
--- a/src/paradoc/io/pdf/exporter.py
+++ b/src/paradoc/io/pdf/exporter.py
@@ -39,7 +39,7 @@ def docx2pdf(docx_file, output_file):
     pypandoc.convert_file(
         str(docx_file),
         "pdf",
-        extra_args=['--pdf-engine=pdflatex'],
+        extra_args=["--pdf-engine=pdflatex"],
         outputfile=str(output_file),
         encoding="utf8",
     )