diff --git a/src/Kdyby/RabbitMq/DI/RabbitMqExtension.php b/src/Kdyby/RabbitMq/DI/RabbitMqExtension.php
index 2a6cf5eb..f4103ed8 100644
--- a/src/Kdyby/RabbitMq/DI/RabbitMqExtension.php
+++ b/src/Kdyby/RabbitMq/DI/RabbitMqExtension.php
@@ -241,8 +241,13 @@ protected function loadConnections($connections)
 		foreach ($connections as $name => $config) {
 			$config = $this->mergeConfig($config, $this->connectionDefaults);
 
-			Nette\Utils\Validators::assertField($config, 'user', 'string:3..', "The config item '%' of connection {$this->name}.{$name}");
-			Nette\Utils\Validators::assertField($config, 'password', 'string:3..', "The config item '%' of connection {$this->name}.{$name}");
+			if (!$config['user'] instanceof Nette\DI\Statement) {
+				Nette\Utils\Validators::assertField($config, 'user', 'string:3..', "The config item '%' of connection {$this->name}.{$name}");
+			}
+
+			if (!$config['password'] instanceof Nette\DI\Statement) {
+				Nette\Utils\Validators::assertField($config, 'password', 'string:3..', "The config item '%' of connection {$this->name}.{$name}");
+			}
 
 			$connection = $builder->addDefinition($serviceName = $this->prefix($name . '.connection'))
 				->setClass('Kdyby\RabbitMq\Connection')