diff --git a/src/nostalgia/modules/gfx/include/nostalgia/gfx/tilesheet.hpp b/src/nostalgia/modules/gfx/include/nostalgia/gfx/tilesheet.hpp
index dc4e5ace..14652ec0 100644
--- a/src/nostalgia/modules/gfx/include/nostalgia/gfx/tilesheet.hpp
+++ b/src/nostalgia/modules/gfx/include/nostalgia/gfx/tilesheet.hpp
@@ -35,7 +35,7 @@ constexpr bool valid(TileSheetV1 const&ts) noexcept {
 	return (ts.bpp == 4 || ts.bpp == 8) && ts.pixels.size() == bytes;
 }
 
-constexpr ox::Error repair(TileSheetV1 &ts, int bpp) noexcept {
+constexpr ox::Error repair(TileSheetV1 &ts, int const bpp) noexcept {
 	auto const bytes = static_cast<size_t>(ts.columns * ts.rows * PixelsPerTile) / (bpp == 4 ? 2 : 1);
 	ts.pixels.resize(bytes);
 	return {};
@@ -84,7 +84,7 @@ constexpr bool valid(TileSheetV2 const&ts) noexcept {
 	return (ts.bpp == 4 || ts.bpp == 8) && valid(ts.subsheet, ts.bpp);
 }
 
-constexpr void repair(TileSheetV2::SubSheet &ss, int bpp) noexcept {
+constexpr void repair(TileSheetV2::SubSheet &ss, int const bpp) noexcept {
 	auto const bytes = static_cast<size_t>(ss.columns * ss.rows * PixelsPerTile) / (bpp == 4 ? 2 : 1);
 	ss.pixels.resize(bytes);
 	for (auto &s : ss.subsheets) {
@@ -154,7 +154,7 @@ constexpr bool valid(TileSheetV3 const&ts) noexcept {
 	return (ts.bpp == 4 || ts.bpp == 8) && valid(ts.subsheet, ts.bpp);
 }
 
-constexpr void repair(TileSheetV3::SubSheet &ss, int bpp) noexcept {
+constexpr void repair(TileSheetV3::SubSheet &ss, int const bpp) noexcept {
 	auto const bytes = static_cast<size_t>(ss.columns * ss.rows * PixelsPerTile) / (bpp == 4 ? 2 : 1);
 	ss.pixels.resize(bytes);
 	for (auto &s : ss.subsheets) {
@@ -248,7 +248,7 @@ constexpr bool valid(TileSheetV4 const&ts) noexcept {
 	return (ts.bpp == 4 || ts.bpp == 8) && valid(ts.subsheet, ts.bpp);
 }
 
-constexpr void repair(TileSheetV4::SubSheet &ss, int bpp) noexcept {
+constexpr void repair(TileSheetV4::SubSheet &ss, int const bpp) noexcept {
 	if (ss.subsheets.empty()) {
 		auto const bytes = static_cast<size_t>(ss.columns * ss.rows * PixelsPerTile) / (bpp == 4 ? 2 : 1);
 		ss.pixels.resize(bytes);
@@ -350,7 +350,7 @@ constexpr bool valid(TileSheetV5 const&ts) noexcept {
 	return (ts.bpp == 4 || ts.bpp == 8) && valid(ts.subsheet);
 }
 
-constexpr void repair(TileSheetV5::SubSheet &ss, int const bpp) noexcept {
+constexpr void repair(TileSheetV5::SubSheet &ss) noexcept {
 	if (ss.subsheets.empty()) {
 		auto const bytes = static_cast<size_t>(ss.columns * ss.rows * PixelsPerTile);
 		ss.pixels.resize(bytes);
@@ -360,7 +360,7 @@ constexpr void repair(TileSheetV5::SubSheet &ss, int const bpp) noexcept {
 		ss.rows = -1;
 	}
 	for (auto &s : ss.subsheets) {
-		repair(s, bpp);
+		repair(s);
 	}
 }
 
@@ -368,7 +368,7 @@ constexpr ox::Error repair(TileSheetV5 &ts) noexcept {
 	if (ts.bpp != 4 && ts.bpp != 8) {
 		return ox::Error{1, "Unable to repair TileSheet"};
 	}
-	repair(ts.subsheet, ts.bpp);
+	repair(ts.subsheet);
 	return {};
 }