diff --git a/init.lua b/init.lua
index b061bb2..7e6e3d0 100644
--- a/init.lua
+++ b/init.lua
@@ -311,6 +311,7 @@ minetest.register_lbm({
 		if color2 == "_grey" then color2 = "grey" end
 
 		local paletteidx, hue = unifieddyes.getpaletteidx("unifieddyes:"..color2, "extended")
+		if not paletteidx or not hue then return end
 
 		if string.find(type, "multicolor") then