diff --git a/ocrmypdf/main.py b/ocrmypdf/main.py
index c8ade0ae..3790bd92 100755
--- a/ocrmypdf/main.py
+++ b/ocrmypdf/main.py
@@ -185,6 +185,9 @@ advanced.add_argument(
     '--tesseract-timeout', default=180.0, type=float, metavar='SECONDS',
     help='give up on OCR after the timeout, but copy the preprocessed page '
          'into the final output')
+advanced.add_argument(
+    '--deskewer', choices=['leptonica', 'unpaper'], default='leptonica',
+    help='choose deskew provider')
 
 debugging = parser.add_argument_group(
     "Debugging",
@@ -493,7 +496,11 @@ def preprocess_deskew(
     pageinfo = get_pageinfo(input_file, pdfinfo, pdfinfo_lock)
     dpi = int(pageinfo['xres'])
 
-    unpaper.deskew(input_file, output_file, dpi, log)
+    if options.deskewer == 'unpaper':
+        unpaper.deskew(input_file, output_file, dpi, log)
+    else:
+        from . import leptonica
+        leptonica.deskew(input_file, output_file, dpi)
 
 
 @transform(