diff --git a/modules/imap/functions.php b/modules/imap/functions.php
index d3102c35e..7badc0293 100644
--- a/modules/imap/functions.php
+++ b/modules/imap/functions.php
@@ -1526,9 +1526,10 @@ function forward_dropdown($output,$reply_args) {
 if (!hm_exists('parse_sieve_config_host')) {
 function parse_sieve_config_host($host) {
     $url = parse_url($host);
-    if(!isset($url['host'])) {
-        $host = $url['path'];
+    if ($url === false) {
+        return $host;
     }
+    $host = $url['host'] ?? $url['path'];
     $port = $url['port'] ?? '4190';
     return [$host, $port];
 }}