diff --git a/colddb.lua b/colddb.lua
index d30be21..934bf53 100644
--- a/colddb.lua
+++ b/colddb.lua
@@ -54,7 +54,7 @@ function colddb.Colddb(dir)
 	end
 	
 	local function file_exists(name)
-		local f = io.open(string.format("%s%s.cold", directory, name), "r")
+		local f = io.open(string.format("%s/%s.cold", directory, name), "r")
 		if f ~= nil then 
 			io.close(f)
 			return true
@@ -75,7 +75,7 @@ function colddb.Colddb(dir)
 	end
 	
 	local function delete_file(name)
-		local text = string.format("%s%s.cold", directory, name)
+		local text = string.format("%s/%s.cold", directory, name)
 		
 		local err, msg = os.remove(text) 
 		if err == nil then 
@@ -84,7 +84,7 @@ function colddb.Colddb(dir)
 	end
 	
 	local function load_table(name)
-		local f = io.open(string.format("%s%s.cold", directory, name), "r")
+		local f = io.open(string.format("%s/%s.cold", directory, name), "r")
 		if f then
 			local data = minetest.deserialize(f:read("*a"))
 			f:close()
@@ -94,16 +94,16 @@ function colddb.Colddb(dir)
 	end
 	
 	local function save_table(name, _table)
-		minetest.log(string.format("%s%s.cold", directory, name))
-		return minetest.safe_file_write(string.format("%s%s.cold", directory, name), minetest.serialize(_table))
+		minetest.log(string.format("%s/%s.cold", directory, name))
+		return minetest.safe_file_write(string.format("%s/%s.cold", directory, name), minetest.serialize(_table))
 	end
 
 	local function save_key(name)
-		return minetest.safe_file_write(string.format("%s%s.cold", directory, name), "")
+		return minetest.safe_file_write(string.format("%s/%s.cold", directory, name), "")
 	end
 
 	local function load_key(name)
-		local f = io.open(string.format("%s%s.cold", directory, name), "r")
+		local f = io.open(string.format("%s/%s.cold", directory, name), "r")
 		if f then
 			f:close()
 			return true
@@ -126,7 +126,7 @@ function colddb.Colddb(dir)
 		mem_pool_del[name] = nil
 	end
 	
-		self.clear_mem = function(name)
+	self.clear_mem = function(name)
 		mem_pool[name] = nil
 		mem_pool_del[name] = nil
 	end