diff --git a/extconf.rb b/extconf.rb
index f7de848..9ee2a39 100644
--- a/extconf.rb
+++ b/extconf.rb
@@ -15,5 +15,5 @@ if have_library('mysqlclient')
   
   create_makefile('mysql_duce_ext')
 else
-  puts 'libmysql not found, maybe try manually specifying --with-mysql-dir to find it?'
+  puts 'libmysql not found, maybe try manually specifying --with-mysql-lib to find it?'
 end
\ No newline at end of file