--- a/editor/include/editing.inc.php
+++ b/editor/include/editing.inc.php
@@ -17,7 +17,7 @@
 * @return bool
 */
 function send_mail($email, $subject, $message, $from = "", $files = array()) {
-	$eol = (strncasecmp(PHP_OS, "win", 3) ? "\n" : "\r\n"); // PHP_EOL available since PHP 4.3.10 and 5.0.2
+	$eol = (DIRECTORY_SEPARATOR == "/" ? "\n" : "\r\n"); // PHP_EOL available since PHP 5.0.2
 	$message = str_replace("\n", $eol, wordwrap(str_replace("\r", "", "$message\n")));
 	$boundary = uniqid("boundary");
 	$attachments = "";