diff --git a/Userland/Libraries/LibPDF/Fonts/CFF.cpp b/Userland/Libraries/LibPDF/Fonts/CFF.cpp
index c9d13a43f2..e7100fa68c 100644
--- a/Userland/Libraries/LibPDF/Fonts/CFF.cpp
+++ b/Userland/Libraries/LibPDF/Fonts/CFF.cpp
@@ -631,7 +631,7 @@ PDFErrorOr<Vector<DeprecatedFlyString>> CFF::parse_charset(Reader&& reader, size
         while (names.size() < glyph_count - 1) {
             auto first_sid = TRY(reader.try_read<BigEndian<SID>>());
             int left = TRY(reader.try_read<Card8>());
-            for (u8 sid = first_sid; left >= 0; left--, sid++)
+            for (SID sid = first_sid; left >= 0; left--, sid++)
                 TRY(names.try_append(resolve_sid(sid, strings)));
         }
     }