diff --git a/init.lua b/init.lua
index 6a9ad9f..197a140 100755
--- a/init.lua
+++ b/init.lua
@@ -18,6 +18,7 @@ local update_rotating_state = nc_extended_rotating.state.update_rotating_state
 local get_rotating_state    = nc_extended_rotating.state.get_rotating_state
 
 -- TODO: Fix HUD showing rotation hint when we wouldn't / can't rotate.
+-- TODO: Simplify registration and `on_rightclick` replacement into one call.
 -- TODO: Add some more comments.
 
 nodecore.register_playerstep({
@@ -56,8 +57,14 @@ do
     for _, prism_state in ipairs({ "", "_on", "_gated" }) do
         register_rotatable("nc_optics:prism" .. prism_state, PRISM_FILTERED_LOOKUP) end
 
-    register_rotatable("nc_doors:panel_plank" , PANEL_FILTERED_LOOKUP)
-    register_rotatable("nc_doors:panel_cobble", PANEL_FILTERED_LOOKUP)
+    -- Register all existing door panels.
+    nodecore.register_on_register_item({
+        retroactive = true,
+        func = function(name, def)
+            if def.groups and def.groups.door_panel and (not def.groups.door)
+                then register_rotatable(name, PANEL_FILTERED_LOOKUP) end
+        end,
+    })
 end
 
 local function handle_rightclick(pos, node, clicker)
@@ -91,8 +98,17 @@ do
     for _, lens_state in ipairs({ "", "_on", "_gated" }) do
         replace_optics_on_rightclick("nc_optics:prism" .. lens_state) end
 
-    replace_panel_on_rightclick("nc_doors:panel_plank" , "nc_woodwork:staff")
-    replace_panel_on_rightclick("nc_doors:panel_cobble", "nc_lode:rod_tempered")
+    -- Replace `on_rightclick` for all existing doors' panels.
+    nodecore.register_on_register_item({
+        retroactive = true,
+        func = function(name, def)
+            if def.groups and def.groups.door then
+                local panel = def.drop_in_place -- The panel version of the door.
+                local pin   = def.drop          -- Dropped item is the door's pin.
+                replace_panel_on_rightclick(panel.name, pin.name)
+            end
+        end,
+    })
 end
 
 -- Override `nc_scaling`'s default empty hand right-click behavior so we can use it