diff --git a/init.lua b/init.lua
index 37b37b1..2690f1a 100644
--- a/init.lua
+++ b/init.lua
@@ -151,7 +151,7 @@ function treasurer.register_treasure(name, rarity, preciousness, count, wear, tr
 
 	-- check type of treasurer_group
 	if type(treasurer_groups) ~= "table" and type(treasurer_groups) ~= "nil" and type(treasurer_groups) ~= "string" then
-		minetest.log("error","[treasurer] I rejected the treasure \""..tostring(name).."\" because the treasure_group parameter is of type "..tosting(type(treasurer_groups)).." (expected: nil, string or table).")
+		minetest.log("error","[treasurer] I rejected the treasure \""..tostring(name).."\" because the treasure_group parameter is of type "..tostring(type(treasurer_groups)).." (expected: nil, string or table).")
 		return false
 	end