diff --git a/src/lua/LuaSimulation.cpp b/src/lua/LuaSimulation.cpp
index dfc7235dd..033a8e986 100644
--- a/src/lua/LuaSimulation.cpp
+++ b/src/lua/LuaSimulation.cpp
@@ -1960,9 +1960,11 @@ void LuaSimulation::Open(lua_State *L)
 	};
 	lua_newtable(L);
 	luaL_register(L, NULL, reg);
+
 #define LCONST(v) lua_pushinteger(L, int(v)); lua_setfield(L, -2, #v)
 #define LCONSTF(v) lua_pushnumber(L, float(v)); lua_setfield(L, -2, #v)
 #define LCONSTAS(k, v) lua_pushinteger(L, int(v)); lua_setfield(L, -2, k)
+
 	LCONST(CELL);
 	LCONST(XCELLS);
 	LCONST(YCELLS);
@@ -1987,6 +1989,7 @@ void LuaSimulation::Open(lua_State *L)
 	LCONST(ISTP);
 	LCONSTF(CFDS);
 	LCONSTF(MAX_VELOCITY);
+
 	LCONST(TOOL_HEAT);
 	LCONST(TOOL_COOL);
 	LCONST(TOOL_VAC);
@@ -1996,6 +1999,7 @@ void LuaSimulation::Open(lua_State *L)
 	LCONST(TOOL_MIX);
 	LCONST(TOOL_CYCL);
 	LCONSTAS("TOOL_WIND", sd.tools.size());
+
 	LCONST(DECO_DRAW);
 	LCONST(DECO_CLEAR);
 	LCONST(DECO_ADD);
@@ -2003,32 +2007,45 @@ void LuaSimulation::Open(lua_State *L)
 	LCONST(DECO_MULTIPLY);
 	LCONST(DECO_DIVIDE);
 	LCONST(DECO_SMUDGE);
+
 	LCONST(FLAG_STAGNANT);
 	LCONST(FLAG_SKIPMOVE);
 	LCONST(FLAG_MOVABLE);
 	LCONST(FLAG_PHOTDECO);
+
 	LCONST(PMAPBITS);
 	LCONST(PMAPMASK);
+
 	LCONST(BRUSH_CIRCLE);
 	LCONST(BRUSH_SQUARE);
 	LCONST(BRUSH_TRIANGLE);
 	LCONST(NUM_DEFAULTBRUSHES);
 	LCONSTAS("NUM_BRUSHES", lsi->gameModel->BrushListSize());
+
 	LCONST(EDGE_VOID);
 	LCONST(EDGE_SOLID);
 	LCONST(EDGE_LOOP);
 	LCONST(NUM_EDGEMODES);
+
 	LCONST(AIR_ON);
 	LCONST(AIR_PRESSUREOFF);
 	LCONST(AIR_VELOCITYOFF);
 	LCONST(AIR_OFF);
 	LCONST(AIR_NOUPDATE);
 	LCONST(NUM_AIRMODES);
+
 	LCONST(GRAV_VERTICAL);
 	LCONST(GRAV_OFF);
 	LCONST(GRAV_RADIAL);
 	LCONST(GRAV_CUSTOM);
 	LCONST(NUM_GRAVMODES);
+
+	LCONST(DECOSPACE_SRGB);
+	LCONST(DECOSPACE_LINEAR);
+	LCONST(DECOSPACE_GAMMA22);
+	LCONST(DECOSPACE_GAMMA18);
+	LCONST(NUM_DECOSPACES);
+
 	{
 		lua_newtable(L);
 		for (int i = 0; i < UI_WALLCOUNT; i++)