diff --git a/library/Icinga/Web/Session/PhpSession.php b/library/Icinga/Web/Session/PhpSession.php
index 5aafc900f..5c9805a8b 100644
--- a/library/Icinga/Web/Session/PhpSession.php
+++ b/library/Icinga/Web/Session/PhpSession.php
@@ -68,7 +68,7 @@ class PhpSession extends Session
         if (version_compare(PHP_VERSION, '7.1.0') < 0) {
             $defaultCookieOptions['hash_function'] = true;
             $defaultCookieOptions['hash_bits_per_character'] = 5;
-        } else {
+        } elseif (version_compare(PHP_VERSION, '8.4.0') < 0) {
             $defaultCookieOptions['sid_bits_per_character'] = 5;
         }