diff --git a/mods/crafting/api.lua b/mods/crafting/api.lua
index c507cf9..0bd267a 100644
--- a/mods/crafting/api.lua
+++ b/mods/crafting/api.lua
@@ -276,7 +276,7 @@ form = form .. "listring[current_player;main]"
 form = form .. "listring[current_player;craft_out]"
 
 form = form .. default.ui.get_itemslot_bg(0.25, 0.25, 1, 4)
-form = form .. default.ui.get_itemslot_bg(7.25, 3.25, 1, 1)
+form = form .. default.ui.get_output_itemslot_bg(7.25, 3.25, 1, 1)
 
 form = form .. default.ui.button(7.25, 1.25, 1, 1, "do_craft_1", "1")
 form = form .. default.ui.button(7.25, 2.25, 1, 1, "do_craft_10", "10")
diff --git a/mods/default/formspec.lua b/mods/default/formspec.lua
index 2a36274..2de4c85 100644
--- a/mods/default/formspec.lua
+++ b/mods/default/formspec.lua
@@ -63,6 +63,8 @@ function default.ui.get_hotbar_itemslot_bg(x, y, w, h)
    return out
 end
 
+default.ui.get_output_itemslot_bg = default.ui.get_hotbar_itemslot_bg
+
 -- Buttons
 
 function default.ui.image_button(x, y, w, h, name, image, tooltip)
diff --git a/mods/default/furnace.lua b/mods/default/furnace.lua
index bc58c48..674e67a 100644
--- a/mods/default/furnace.lua
+++ b/mods/default/furnace.lua
@@ -18,7 +18,7 @@ function default.furnace_active_formspec(percent, item_percent)
    form = form .. default.ui.get_itemslot_bg(2.25, 2.75, 1, 1)
 
    form = form .. "list[current_name;dst;4.25,1.25;2,2;]"
-   form = form .. default.ui.get_hotbar_itemslot_bg(4.25, 1.25, 2, 2)
+   form = form .. default.ui.get_output_itemslot_bg(4.25, 1.25, 2, 2)
 
    form = form .. "listring[current_player;main]"
    form = form .. "listring[current_name;src]"