diff --git a/lib/Alchemy/Phrasea/WorkerManager/Queue/AMQPConnection.php b/lib/Alchemy/Phrasea/WorkerManager/Queue/AMQPConnection.php
index 3fd5e31e52..c7f60ab592 100644
--- a/lib/Alchemy/Phrasea/WorkerManager/Queue/AMQPConnection.php
+++ b/lib/Alchemy/Phrasea/WorkerManager/Queue/AMQPConnection.php
@@ -310,7 +310,7 @@ class AMQPConnection
 
     public function getConnection()
     {
-        if (!isset($this->connection)) {
+        if (empty($this->connection)) {
             try {
                 $heartbeat = $this->hostConfig['heartbeat'] ?? 60;