-$lang['_do_login'] = "Wrong %s, or wrong %s.";
-$lang['_valid_date'] = "Invalid %s! Use the specified format or leave the field blank if you don't want to specify it.";
-$lang['_valid_old_password'] = "Wrong %s.";
+$lang['_do_login'] = 'Wrong %s, or wrong %s.';
+$lang['_valid_date'] = 'Invalid %s! Use the specified format or leave the field blank if you don\'t want to specify it.';
+$lang['_valid_old_password'] = 'Wrong %s.';