diff --git a/src/maploader/udmf.cpp b/src/maploader/udmf.cpp
index d248a0eaf..82f9ed502 100644
--- a/src/maploader/udmf.cpp
+++ b/src/maploader/udmf.cpp
@@ -755,9 +755,6 @@ public:
 
 			case NAME_lightintensity:
 			case NAME_suncolor:
-			case NAME_sundirx:
-			case NAME_sundiry:
-			case NAME_sundirz:
 			case NAME_sampledistance:
 			case NAME_bounces:
 			case NAME_gridsize:
diff --git a/src/namedef_custom.h b/src/namedef_custom.h
index 98606b707..5bd305525 100644
--- a/src/namedef_custom.h
+++ b/src/namedef_custom.h
@@ -860,9 +860,6 @@ xx(lightcolorceiling)
 xx(lightintensityceiling)
 xx(lightdistanceceiling)
 xx(suncolor)
-xx(sundirx)
-xx(sundiry)
-xx(sundirz)
 xx(sampledistance)
 xx(bounces)
 xx(gridsize)