diff --git a/src/nostalgia/core/gfx.hpp b/src/nostalgia/core/gfx.hpp
index 3c62092c..42dad3dd 100644
--- a/src/nostalgia/core/gfx.hpp
+++ b/src/nostalgia/core/gfx.hpp
@@ -217,7 +217,7 @@ struct TileSheet {
 		constexpr auto setPixelCount(int8_t bpp, std::size_t cnt) noexcept {
 			switch (bpp) {
 				case 4:
-					pixels.resize(cnt * 2);
+					pixels.resize(cnt / 2);
 					return OxError(0);
 				case 8:
 					pixels.resize(cnt);