diff --git a/dangerzone/isolation_provider/base.py b/dangerzone/isolation_provider/base.py
index e761c23b5..43eb4b973 100644
--- a/dangerzone/isolation_provider/base.py
+++ b/dangerzone/isolation_provider/base.py
@@ -146,7 +146,7 @@ def ocr_page(self, pixmap: fitz.Pixmap, ocr_lang: str) -> bytes:
                 tessdata=get_tessdata_dir(),
             )
 
-    def _pixels_to_pdf(
+    def pixels_to_pdf_page(
         self,
         untrusted_data: bytes,
         untrusted_width: int,
@@ -224,7 +224,7 @@ def _convert(
                 percentage += step
                 self.print_progress(document, False, text, percentage)
 
-                page_pdf = self._pixels_to_pdf(
+                page_pdf = self.pixels_to_pdf_page(
                     untrusted_pixels,
                     width,
                     height,