diff --git a/src/AbstractPluginManager.php b/src/AbstractPluginManager.php
index 3fb7f8df..039ac137 100644
--- a/src/AbstractPluginManager.php
+++ b/src/AbstractPluginManager.php
@@ -142,7 +142,7 @@ public function setServiceLocator(ServiceLocatorInterface $serviceLocator)
     /**
      * Get the main plugin manager. Useful for fetching dependencies from within factories.
      *
-     * @return mixed
+     * @return ServiceLocatorInterface
      */
     public function getServiceLocator()
     {