diff --git a/init.lua b/init.lua
index c2fde66..b54f72a 100755
--- a/init.lua
+++ b/init.lua
@@ -66,7 +66,7 @@ end
 
 function filter.check_message(name, message)
 	for _, w in ipairs(words) do
-		if utf8.find(utf8:lower(message), "%f[%a]" .. w .. "%f[%A]") then
+		if utf8.find(utf8.lower(message), "%f[%a]" .. w .. "%f[%A]") then
 			return false
 		end
 	end