diff --git a/cavestuff/init.lua b/cavestuff/init.lua
index fa710ac..71c9201 100644
--- a/cavestuff/init.lua
+++ b/cavestuff/init.lua
@@ -1,5 +1,3 @@
-cavestuff = {}
-
 dofile(minetest.get_modpath("cavestuff").."/nodes.lua")
 dofile(minetest.get_modpath("cavestuff").."/mapgen.lua")
 
diff --git a/cavestuff/nodes.lua b/cavestuff/nodes.lua
index 0f3f318..a5211d7 100644
--- a/cavestuff/nodes.lua
+++ b/cavestuff/nodes.lua
@@ -155,5 +155,3 @@ minetest.register_node("cavestuff:stalactite_3",{
 		}
 	},
 })
-
---Stalagmites
diff --git a/dryplants/juncus.lua b/dryplants/juncus.lua
index 0bfd635..186b4b0 100644
--- a/dryplants/juncus.lua
+++ b/dryplants/juncus.lua
@@ -46,6 +46,10 @@ minetest.register_node("dryplants:juncus", {
 		fixed = {-7/16, -1/2, -7/16, 7/16, 0, 7/16},
 	},
 	on_place = function(itemstack, placer, pointed_thing)
+		if not itemstack or not placer or not pointed_thing then
+			return
+		end
+
 		local playername = placer:get_player_name()
 		if minetest.is_protected(pointed_thing.above, playername) or
 			minetest.is_protected(pointed_thing.under, playername) then
diff --git a/pl_seaweed/init.lua b/pl_seaweed/init.lua
index f2565a9..e842478 100644
--- a/pl_seaweed/init.lua
+++ b/pl_seaweed/init.lua
@@ -47,7 +47,11 @@ for i in ipairs(algae_list) do
 		liquids_pointable = true,
 		drop = "flowers:seaweed",
 		on_place = function(itemstack, placer, pointed_thing)
-			local keys=placer:get_player_control()
+			if not itemstack or not placer or not pointed_thing then
+				return
+			end
+
+			local keys = placer:get_player_control()
 			local pt = pointed_thing
 
 			local place_pos = nil
diff --git a/pl_waterlilies/init.lua b/pl_waterlilies/init.lua
index bc809fe..1a33cbb 100644
--- a/pl_waterlilies/init.lua
+++ b/pl_waterlilies/init.lua
@@ -59,7 +59,11 @@ for i in ipairs(lilies_list) do
 		liquids_pointable = true,
 		drop = "flowers:waterlily",
 		on_place = function(itemstack, placer, pointed_thing)
-			local keys=placer:get_player_control()
+			if not itemstack or not placer or not pointed_thing then
+				return
+			end
+
+			local keys = placer:get_player_control()
 			local pt = pointed_thing
 
 			local place_pos = nil