diff --git a/src/nostalgia/modules/core/include/nostalgia/core/gfx.hpp b/src/nostalgia/modules/core/include/nostalgia/core/gfx.hpp
index a22461a5..db6f013d 100644
--- a/src/nostalgia/modules/core/include/nostalgia/core/gfx.hpp
+++ b/src/nostalgia/modules/core/include/nostalgia/core/gfx.hpp
@@ -102,8 +102,6 @@ OX_MODEL_BEGIN(TileSheetSet)
 	OX_MODEL_FIELD(entries)
 OX_MODEL_END()
 
-void addEntry(TileSheetSet &set, ox::FileAddress path, int32_t begin = 0, int32_t size = -1) noexcept;
-
 [[nodiscard]]
 int tileColumns(Context&) noexcept;