diff --git a/dangerzone/isolation_provider/base.py b/dangerzone/isolation_provider/base.py
index 26d40a646..e761c23b5 100644
--- a/dangerzone/isolation_provider/base.py
+++ b/dangerzone/isolation_provider/base.py
@@ -101,7 +101,7 @@ def convert(
             self.print_progress(document, True, str(e), 0)
             document.mark_as_failed()
 
-    def _ocr_page(self, pixmap: fitz.Pixmap, ocr_lang: str) -> bytes:
+    def ocr_page(self, pixmap: fitz.Pixmap, ocr_lang: str) -> bytes:
         """Get a single page as pixels, OCR it, and return a PDF as bytes.
 
         This operation is particularly tricky, since we have to handle various PyMuPDF
@@ -164,7 +164,7 @@ def _pixels_to_pdf(
         pixmap.set_dpi(DEFAULT_DPI, DEFAULT_DPI)
 
         if ocr_lang:  # OCR the document
-            page_pdf_bytes = self._ocr_page(pixmap, ocr_lang)
+            page_pdf_bytes = self.ocr_page(pixmap, ocr_lang)
         else:  # Don't OCR
             page_doc = fitz.Document()
             page_doc.insert_file(pixmap)