diff --git a/src/Bridges/SecurityHttp/SessionStorage.php b/src/Bridges/SecurityHttp/SessionStorage.php
index 27396e8..a3214be 100644
--- a/src/Bridges/SecurityHttp/SessionStorage.php
+++ b/src/Bridges/SecurityHttp/SessionStorage.php
@@ -91,7 +91,7 @@ private function setupExpiration(): void
 		}
 
 		$section->set('expireIdentity', $this->expireIdentity);
-		$section->setExpiration((string) $this->expireTime, 'foo'); // time check
+		$section->setExpiration(isset($this->expireTime) ? (string) $this->expireTime : null, 'foo'); // time check
 	}