diff --git a/minetest/texmod/calc_dims.lua b/minetest/texmod/calc_dims.lua
index 3bf5e5f..e2ee66c 100644
--- a/minetest/texmod/calc_dims.lua
+++ b/minetest/texmod/calc_dims.lua
@@ -17,6 +17,7 @@ do
 	cd.makealpha = base_dim
 	cd.lowpart = base_dim
 	cd.mask = base_dim
+	cd.multiply = base_dim
 	cd.colorize = base_dim
 end