diff --git a/Source/engine/render/dun_render.cpp b/Source/engine/render/dun_render.cpp
index 0cd413eee..5e2f12a4a 100644
--- a/Source/engine/render/dun_render.cpp
+++ b/Source/engine/render/dun_render.cpp
@@ -1197,29 +1197,4 @@ void world_draw_black_tile(const Surface &out, int sx, int sy)
 	}
 }
 
-void DunTileColorMap(std::span<const uint8_t> src, TileType tileType,
-    const uint8_t *tbl, uint8_t *dst)
-{
-	if (tileType == TileType::TransparentSquare) {
-		const uint8_t *srcPtr = src.data();
-		for (auto i = 0; i < Height; ++i) {
-			for (uint_fast8_t drawWidth = Width; drawWidth > 0;) {
-				auto v = static_cast<int8_t>(*srcPtr++);
-				if (v > 0) {
-					drawWidth -= v;
-					while (v-- > 0) {
-						*dst++ = tbl[*srcPtr++];
-					}
-				} else {
-					drawWidth += v;
-				}
-			}
-		}
-	} else {
-		for (const uint8_t pix : src) {
-			*dst++ = tbl[pix];
-		}
-	}
-}
-
 } // namespace devilution
diff --git a/Source/engine/render/dun_render.hpp b/Source/engine/render/dun_render.hpp
index 59a4b2d47..d61c35145 100644
--- a/Source/engine/render/dun_render.hpp
+++ b/Source/engine/render/dun_render.hpp
@@ -6,7 +6,6 @@
 #pragma once
 
 #include <cstdint>
-#include <span>
 
 #include <SDL_endian.h>
 
@@ -276,15 +275,4 @@ void RenderTile(const Surface &out, Point position,
  */
 void world_draw_black_tile(const Surface &out, int sx, int sy);
 
-/**
- * @brief Applies a color map to a dungeon tile.
- *
- * @param src Dungeon CEL data.
- * @param tileType Dungeon CEL type.
- * @param tbl Palette mapping.
- * @param dst Output dungeon CEL data.
- */
-void DunTileColorMap(std::span<const uint8_t> src, TileType tileType,
-    const uint8_t *tbl, uint8_t *dst);
-
 } // namespace devilution