diff --git a/src/lua_hudlib.c b/src/lua_hudlib.c
index 5c49b1d4a..75a84ed18 100644
--- a/src/lua_hudlib.c
+++ b/src/lua_hudlib.c
@@ -251,7 +251,7 @@ static int hudinfo_num(lua_State *L)
 
 static int colormap_get(lua_State *L)
 {
-	UINT8 *colormap = *((UINT8 **)luaL_checkudata(L, 1, META_COLORMAP));
+	const UINT8 *colormap = *((UINT8 **)luaL_checkudata(L, 1, META_COLORMAP));
 	UINT32 i = luaL_checkinteger(L, 2);
 	if (i >= 256)
 		return luaL_error(L, "colormap index %d out of range (0 - %d)", i, 255);
@@ -259,16 +259,6 @@ static int colormap_get(lua_State *L)
 	return 1;
 }
 
-static int colormap_set(lua_State *L)
-{
-	UINT8 *colormap = *((UINT8 **)luaL_checkudata(L, 1, META_COLORMAP));
-	UINT32 i = luaL_checkinteger(L, 2);
-	if (i >= 256)
-		return luaL_error(L, "colormap index %d out of range (0 - %d)", i, 255);
-	colormap[i] = (UINT8)luaL_checkinteger(L, 3);
-	return 0;
-}
-
 static int patch_get(lua_State *L)
 {
 	patch_t *patch = *((patch_t **)luaL_checkudata(L, 1, META_PATCH));
@@ -1341,9 +1331,6 @@ int LUA_HudLib(lua_State *L)
 	luaL_newmetatable(L, META_COLORMAP);
 		lua_pushcfunction(L, colormap_get);
 		lua_setfield(L, -2, "__index");
-
-		lua_pushcfunction(L, colormap_set);
-		lua_setfield(L, -2, "__newindex");
 	lua_pop(L,1);
 
 	luaL_newmetatable(L, META_PATCH);