diff --git a/src/ocrmypdf/_graft.py b/src/ocrmypdf/_graft.py
index 500606d5..33098a8b 100644
--- a/src/ocrmypdf/_graft.py
+++ b/src/ocrmypdf/_graft.py
@@ -248,10 +248,10 @@ class OcrGrafter:
             # content may have a rotation applied. Wrap the text stream with a rotation
             # so it will be oriented the same way as the rest of the page content.
             # (Previous versions OCRmyPDF rotated the content layer to match the text.)
-            mediabox = [float(pdf_text.pages[0].MediaBox[v]) for v in range(4)]
+            mediabox = pdf_text.pages[0].mediabox
             wt, ht = mediabox[2] - mediabox[0], mediabox[3] - mediabox[1]
 
-            mediabox = [float(base_page.MediaBox[v]) for v in range(4)]
+            mediabox = base_page.mediabox
             wp, hp = mediabox[2] - mediabox[0], mediabox[3] - mediabox[1]
 
             translate = PdfMatrix().translated(-wt / 2, -ht / 2)
diff --git a/src/ocrmypdf/pdfinfo/info.py b/src/ocrmypdf/pdfinfo/info.py
index 05320dce..cb98f834 100644
--- a/src/ocrmypdf/pdfinfo/info.py
+++ b/src/ocrmypdf/pdfinfo/info.py
@@ -828,7 +828,7 @@ class PageInfo:
         detailed_analysis: bool,
     ):
         page: Page = pdf.pages[pageno]
-        mediabox = [Decimal(d) for d in page.MediaBox.as_list()]
+        mediabox = [Decimal(d) for d in page.mediabox.as_list()]
         width_pt = mediabox[2] - mediabox[0]
         height_pt = mediabox[3] - mediabox[1]
 
diff --git a/tests/test_ghostscript.py b/tests/test_ghostscript.py
index 9d8a7fdb..8b465cb0 100644
--- a/tests/test_ghostscript.py
+++ b/tests/test_ghostscript.py
@@ -29,8 +29,8 @@ def francais(resources):
 
 def test_rasterize_size(francais, outdir):
     path, pdf = francais
-    page_size_pts = (pdf.pages[0].MediaBox[2], pdf.pages[0].MediaBox[3])
-    assert pdf.pages[0].MediaBox[0] == pdf.pages[0].MediaBox[1] == 0
+    page_size_pts = (pdf.pages[0].mediabox[2], pdf.pages[0].mediabox[3])
+    assert pdf.pages[0].mediabox[0] == pdf.pages[0].mediabox[1] == 0
     page_size = (page_size_pts[0] / Decimal(72), page_size_pts[1] / Decimal(72))
     target_size = Decimal('50.0'), Decimal('30.0')
     forced_dpi = Resolution(42.0, 4242.0)
@@ -52,8 +52,8 @@ def test_rasterize_size(francais, outdir):
 
 def test_rasterize_rotated(francais, outdir, caplog):
     path, pdf = francais
-    page_size_pts = (pdf.pages[0].MediaBox[2], pdf.pages[0].MediaBox[3])
-    assert pdf.pages[0].MediaBox[0] == pdf.pages[0].MediaBox[1] == 0
+    page_size_pts = (pdf.pages[0].mediabox[2], pdf.pages[0].mediabox[3])
+    assert pdf.pages[0].mediabox[0] == pdf.pages[0].mediabox[1] == 0
     page_size = (page_size_pts[0] / Decimal(72), page_size_pts[1] / Decimal(72))
     target_size = Decimal('50.0'), Decimal('30.0')
     forced_dpi = Resolution(42.0, 4242.0)
diff --git a/tests/test_rotation.py b/tests/test_rotation.py
index 523cc848..806a423a 100644
--- a/tests/test_rotation.py
+++ b/tests/test_rotation.py
@@ -321,15 +321,15 @@ def test_simulated_scan(outdir):
 
     with pikepdf.open(outdir / 'out.pdf') as pdf:
         assert (
-            pdf.pages[1].MediaBox[2] > pdf.pages[1].MediaBox[3]
+            pdf.pages[1].mediabox[2] > pdf.pages[1].mediabox[3]
         ), "Wrong orientation: not landscape"
         assert (
-            pdf.pages[3].MediaBox[2] > pdf.pages[3].MediaBox[3]
+            pdf.pages[3].mediabox[2] > pdf.pages[3].mediabox[3]
         ), "Wrong orientation: Not landscape"
 
         assert (
-            pdf.pages[0].MediaBox[2] < pdf.pages[0].MediaBox[3]
+            pdf.pages[0].mediabox[2] < pdf.pages[0].mediabox[3]
         ), "Wrong orientation: Not portrait"
         assert (
-            pdf.pages[2].MediaBox[2] < pdf.pages[2].MediaBox[3]
+            pdf.pages[2].mediabox[2] < pdf.pages[2].mediabox[3]
         ), "Wrong orientation: Not portrait"