diff --git a/builtin/game/item.lua b/builtin/game/item.lua
index 44ec35c..6c2214e 100644
--- a/builtin/game/item.lua
+++ b/builtin/game/item.lua
@@ -347,6 +347,10 @@ function core.item_place(itemstack, placer, pointed_thing, param2)
 	return itemstack
 end
 
+function core.item_secondary_use(itemstack, placer)
+	return itemstack
+end
+
 function core.item_drop(itemstack, dropper, pos)
 	if dropper and dropper:is_player() then
 		local v = dropper:get_look_dir()
@@ -605,6 +609,7 @@ core.craftitemdef_default = {
 	-- Interaction callbacks
 	on_place = redef_wrapper(core, 'item_place'), -- core.item_place
 	on_drop = redef_wrapper(core, 'item_drop'), -- core.item_drop
+	on_secondary_use = redef_wrapper(core, 'item_secondary_use'),
 	on_use = nil,
 }
 
@@ -622,6 +627,7 @@ core.tooldef_default = {
 
 	-- Interaction callbacks
 	on_place = redef_wrapper(core, 'item_place'), -- core.item_place
+	on_secondary_use = redef_wrapper(core, 'item_secondary_use'),
 	on_drop = redef_wrapper(core, 'item_drop'), -- core.item_drop
 	on_use = nil,
 }
@@ -640,6 +646,7 @@ core.noneitemdef_default = {  -- This is used for the hand and unknown items
 
 	-- Interaction callbacks
 	on_place = redef_wrapper(core, 'item_place'),
+	on_secondary_use = redef_wrapper(core, 'item_secondary_use'),
 	on_drop = nil,
 	on_use = nil,
 }
diff --git a/builtin/game/register.lua b/builtin/game/register.lua
index 00bb232..992fdf7 100644
--- a/builtin/game/register.lua
+++ b/builtin/game/register.lua
@@ -272,6 +272,7 @@ core.register_item(":unknown", {
 	description = "Unknown Item",
 	inventory_image = "unknown_item.png",
 	on_place = core.item_place,
+	on_secondary_use = core.item_secondary_use,
 	on_drop = core.item_drop,
 	groups = {not_in_creative_inventory=1},
 	diggable = true,