diff --git a/wadsrc/static/language.enu b/wadsrc/static/language.enu
index b7558d1b2..ddf23edb9 100644
--- a/wadsrc/static/language.enu
+++ b/wadsrc/static/language.enu
@@ -2645,6 +2645,8 @@ GLPREFMNU_LENS					= "Lens distortion effect";
 GLPREFMNU_SSAO					= "Ambient occlusion quality";
 GLPREFMNU_SSAO_PORTALS			= "Portals with AO";
 GLPREFMNU_FXAA					= "FXAA Quality";
+GLPREFMNU_PALTONEMAPORDER		= "Tonemap Palette Order";
+GLPREFMNU_PALTONEMAPPOWER		= "Tonemap Palette Exponent";
 
 // Option Values
 OPTVAL_SMART 				= "Smart";
@@ -2728,3 +2730,5 @@ OPTVAL_LOW					= "Low";
 OPTVAL_MEDIUM				= "Medium";
 OPTVAL_HIGH					= "High";
 OPTVAL_EXTREME				= "Extreme";
+OPTVAL_OBVERSEFIRST			= "Obverse";
+OPTVAL_REVERSEFIRST			= "Reverse";
diff --git a/wadsrc/static/menudef.zz b/wadsrc/static/menudef.zz
index 599c28a2d..f683f2e0d 100644
--- a/wadsrc/static/menudef.zz
+++ b/wadsrc/static/menudef.zz
@@ -1,3 +1,9 @@
+OptionValue "LookupOrder"
+{
+	0, "$OPTVAL_OBVERSEFIRST"
+	1, "$OPTVAL_REVERSEFIRST"
+}
+
 OptionValue "SpriteclipModes"
 {
 	0, "$OPTVAL_NEVER"
@@ -249,4 +255,7 @@ OptionMenu "GLPrefOptions"
 	Option "$GLPREFMNU_SSAO",		 			gl_ssao,						"SSAOModes"
 	Slider "$GLPREFMNU_SSAO_PORTALS",			gl_ssao_portals,				0.0, 4.0, 1.0, 0
 	Option "$GLPREFMNU_FXAA",		 			gl_fxaa,						"FXAAQuality"
+	StaticText " "
+	Slider "$GLPREFMNU_PALTONEMAPPOWER",		gl_paltonemap_powtable,			0.2, 3.0, 0.1, 0
+	Option "$GLPREFMNU_PALTONEMAPORDER",		gl_paltonemap_reverselookup,	"LookupOrder"
 }