diff --git a/misc.php b/misc.php
index 06a661b44..cbaff6130 100644
--- a/misc.php
+++ b/misc.php
@@ -145,11 +145,19 @@
 		if (strpos($referrer['host'], 'www.') === 0)
 			$referrer['host'] = substr($referrer['host'], 4);
 
+		// Make sure the path component exists
+		if (!isset($referrer['path']))
+			$referrer['path'] = '';
+
 		$valid = parse_url(get_base_url());
 		// Remove www subdomain if it exists
 		if (strpos($valid['host'], 'www.') === 0)
 			$valid['host'] = substr($valid['host'], 4);
 
+		// Make sure the path component exists
+		if (!isset($valid['path']))
+			$valid['path'] = '';
+
 		if ($referrer['host'] == $valid['host'] && preg_match('%^'.preg_quote($valid['path'], '%').'/(.*?)\.php%i', $referrer['path']))
 			$redirect_url = $_SERVER['HTTP_REFERER'];
 	}