diff --git a/maps/dungeons/functions.lua b/maps/dungeons/functions.lua
index e5a3d1ba..dd5e405c 100644
--- a/maps/dungeons/functions.lua
+++ b/maps/dungeons/functions.lua
@@ -358,6 +358,26 @@ function Public.create_scrap(surface, position)
     surface.create_entity({name = scraps[math_random(1, #scraps)], position = position, force = 'neutral'})
 end
 
+function Public.on_marked_for_deconstruction(event)
+    local disabled_for_deconstruction = {
+        ['fish'] = true,
+        ['rock-huge'] = true,
+        ['rock-big'] = true,
+        ['sand-rock-big'] = true,
+        ['crash-site-spaceship-wreck-small-1'] = true,
+        ['crash-site-spaceship-wreck-small-2'] = true,
+        ['crash-site-spaceship-wreck-small-3'] = true,
+        ['crash-site-spaceship-wreck-small-4'] = true,
+        ['crash-site-spaceship-wreck-small-5'] = true,
+        ['crash-site-spaceship-wreck-small-6'] = true
+    }
+    if event.entity and event.entity.valid then
+        if disabled_for_deconstruction[event.entity.name] then
+            event.entity.cancel_deconstruction(game.players[event.player_index].force.name)
+        end
+    end
+end
+
 -- old function 0 - 250 floor 0; 250-500 floor 1; 500 floor 2+
 -- new function 25 - 75 floor 0; 50-100 floor 1; 75-125 floor 2; ...; 500 floor 19
 --
diff --git a/maps/dungeons/main.lua b/maps/dungeons/main.lua
index 8b955b41..47375670 100644
--- a/maps/dungeons/main.lua
+++ b/maps/dungeons/main.lua
@@ -30,19 +30,6 @@ local math_abs = math.abs
 local math_floor = math.floor
 local math_round = math.round
 
-local disabled_for_deconstruction = {
-    ['fish'] = true,
-    ['rock-huge'] = true,
-    ['rock-big'] = true,
-    ['sand-rock-big'] = true,
-    ['crash-site-spaceship-wreck-small-1'] = true,
-    ['crash-site-spaceship-wreck-small-2'] = true,
-    ['crash-site-spaceship-wreck-small-3'] = true,
-    ['crash-site-spaceship-wreck-small-4'] = true,
-    ['crash-site-spaceship-wreck-small-5'] = true,
-    ['crash-site-spaceship-wreck-small-6'] = true
-}
-
 local function get_biome(position)
     --if not a then return "concrete" end
     if position.x ^ 2 + position.y ^ 2 < 6400 then
@@ -359,12 +346,6 @@ local function on_entity_died(event)
     expand(entity.surface, entity.position)
 end
 
-local function on_marked_for_deconstruction(event)
-    if disabled_for_deconstruction[event.entity.name] then
-        event.entity.cancel_deconstruction(game.players[event.player_index].force.name)
-    end
-end
-
 local function on_init()
     local dungeontable = DungeonsTable.get_dungeontable()
     local force = game.create_force('dungeon')
@@ -445,7 +426,7 @@ end
 local Event = require 'utils.event'
 Event.on_init(on_init)
 --Event.add(defines.events.on_tick, on_tick)
-Event.add(defines.events.on_marked_for_deconstruction, on_marked_for_deconstruction)
+Event.add(defines.events.on_marked_for_deconstruction, Functions.on_marked_for_deconstruction)
 Event.add(defines.events.on_player_joined_game, on_player_joined_game)
 Event.add(defines.events.on_player_mined_entity, on_player_mined_entity)
 Event.add(defines.events.on_chunk_generated, on_chunk_generated)
diff --git a/maps/dungeons/tiered_dungeon.lua b/maps/dungeons/tiered_dungeon.lua
index c45b7ee6..59447d31 100644
--- a/maps/dungeons/tiered_dungeon.lua
+++ b/maps/dungeons/tiered_dungeon.lua
@@ -41,19 +41,6 @@ Biomes.laboratory = require 'maps.dungeons.biome_laboratory'
 local math_random = math.random
 local math_round = math.round
 
-local disabled_for_deconstruction = {
-    ['fish'] = true,
-    ['rock-huge'] = true,
-    ['rock-big'] = true,
-    ['sand-rock-big'] = true,
-    ['crash-site-spaceship-wreck-small-1'] = true,
-    ['crash-site-spaceship-wreck-small-2'] = true,
-    ['crash-site-spaceship-wreck-small-3'] = true,
-    ['crash-site-spaceship-wreck-small-4'] = true,
-    ['crash-site-spaceship-wreck-small-5'] = true,
-    ['crash-site-spaceship-wreck-small-6'] = true
-}
-
 local function enable_hard_rooms(position, surface_index)
     local dungeon_table = DungeonsTable.get_dungeontable()
     local floor = surface_index - dungeon_table.original_surface_index
@@ -515,14 +502,6 @@ local function on_entity_died(event)
     expand(entity.surface, entity.position)
 end
 
-local function on_marked_for_deconstruction(event)
-    if event.entity and event.entity.valid then
-        if disabled_for_deconstruction[event.entity.name] then
-            event.entity.cancel_deconstruction(game.players[event.player_index].force.name)
-        end
-    end
-end
-
 local function get_map_gen_settings()
     local settings = {
         ['seed'] = math_random(1, 1000000),
@@ -853,7 +832,7 @@ end
 local Event = require 'utils.event'
 Event.on_init(on_init)
 Event.on_nth_tick(60, on_tick)
-Event.add(defines.events.on_marked_for_deconstruction, on_marked_for_deconstruction)
+Event.add(defines.events.on_marked_for_deconstruction, Functions.on_marked_for_deconstruction)
 Event.add(defines.events.on_player_joined_game, on_player_joined_game)
 Event.add(defines.events.on_player_mined_entity, on_player_mined_entity)
 Event.add(defines.events.on_built_entity, on_built_entity)