diff --git a/src/ServiceManager.php b/src/ServiceManager.php
index cfd67b68..365ab33c 100644
--- a/src/ServiceManager.php
+++ b/src/ServiceManager.php
@@ -361,7 +361,7 @@ public function configure(array $config)
             $this->factories = $config['factories'] + $this->factories;
         }
 
-        if (isset($config['delegators']) && ! empty($config['delegators'])) {
+        if (isset($config['delegators'])) {
             $this->mergeDelegators($config['delegators']);
         }