diff --git a/src/Symfony/Component/Messenger/Transport/RedisExt/Connection.php b/src/Symfony/Component/Messenger/Transport/RedisExt/Connection.php
index baeaf23e0944f..bb818512c2fda 100644
--- a/src/Symfony/Component/Messenger/Transport/RedisExt/Connection.php
+++ b/src/Symfony/Component/Messenger/Transport/RedisExt/Connection.php
@@ -65,7 +65,7 @@ public function __construct(array $configuration, array $connectionCredentials =
 
         foreach (['stream', 'group', 'consumer'] as $key) {
             if (isset($configuration[$key]) && '' === $configuration[$key]) {
-                throw new InvalidArgumentException(sprintf('"%s" should be configured, got an empty string', $key));
+                throw new InvalidArgumentException(sprintf('"%s" should be configured, got an empty string.', $key));
             }
         }