diff --git a/init.lua b/init.lua
index d72f7e3..75eaab2 100644
--- a/init.lua
+++ b/init.lua
@@ -7,9 +7,10 @@ minetest.register_node("geocache:block", {
 	sunlight_propagates = true,
 	walkable = false,
 	groups = {snappy=3,oddly_breakable_by_hand=1},
+	is_ground_content = false,
 	after_place_node = function(pos, placer)
-	local meta = minetest.get_meta(pos)
-	local date_str = os.date("%b %d %Y at %I:%M %p")
+		local meta = minetest.get_meta(pos)
+		local date_str = os.date("%b %d %Y at %I:%M %p")
 		meta:set_string("owner",          placer:get_player_name() );
 		meta:set_string("infotext",       "Right click to view geocache log.  Punch to add your name. (Owned by "..placer:get_player_name()..")");
 		meta:set_string("log",   " "..placer:get_player_name().." on "..date_str);
@@ -28,8 +29,8 @@ minetest.register_node("geocache:block", {
 		return false
 	end,
 	on_punch = function(pos, node, puncher)
-	local meta = minetest.get_meta(pos) 
-	local date_str = os.date("%b %d %Y at %I:%M %p")
+		local meta = minetest.get_meta(pos) 
+		local date_str = os.date("%b %d %Y at %I:%M %p")
 		if not string.find(meta:get_string("log"), string.gsub(" "..puncher:get_player_name().." ", "%-", "%%%-")) then
 			meta:set_string("log", " "..puncher:get_player_name().." on "..date_str.." ,"..meta:get_string("log"))
 			meta:set_string(
@@ -41,7 +42,7 @@ minetest.register_node("geocache:block", {
 		else 
 			minetest.chat_send_player(puncher:get_player_name(), "You already signed this geocache block.")
 		end
-    end,
+	end,
 })
 minetest.register_craft({
 	output = "geocache:block",