diff --git a/include/functions.php b/include/functions.php
index 0eceed623..bcded7e5f 100644
--- a/include/functions.php
+++ b/include/functions.php
@@ -3788,7 +3788,7 @@
 	 * @return string Absolute URL
 	 */
 	function rewrite_relative_url($url, $rel_url) {
-		if (strpos($rel_url, "magnet:") === 0) {
+		if (strpos($rel_url, ":") !== false) {
 			return $rel_url;
 		} else if (strpos($rel_url, "://") !== false) {
 			return $rel_url;