diff --git a/homedecor/window_treatments.lua b/homedecor/window_treatments.lua
index 94c7ecef..27be83d0 100644
--- a/homedecor/window_treatments.lua
+++ b/homedecor/window_treatments.lua
@@ -110,6 +110,7 @@ minetest.register_node("homedecor:curtain_closed", {
 	walkable = false,
 	groups = { snappy = 3 },
 	sounds = default.node_sound_leaves_defaults(),
+	paramtype = "light",
 	paramtype2 = "colorwallmounted",
 	palette = "unifieddyes_palette_colorwallmounted.png",
 	selection_box = { type = "wallmounted" },
@@ -141,6 +142,7 @@ minetest.register_node("homedecor:curtain_open", {
 	walkable = false,
 	groups = { snappy = 3 },
 	sounds = default.node_sound_leaves_defaults(),
+	paramtype = "light",
 	paramtype2 = "colorwallmounted",
 	palette = "unifieddyes_palette_colorwallmounted.png",
 	selection_box = { type = "wallmounted" },