diff --git a/config/default.php b/config/default.php
index <HASH>..<HASH> 100644
--- a/config/default.php
+++ b/config/default.php
@@ -2,7 +2,7 @@
 /**
  * Package prefix for autoloader.
  */
-$loader->addPrefix('Aura\Signal\\', dirname(__DIR__) . DIRECTORY_SEPARATOR . 'src');
+$loader->add('Aura\Signal\\', dirname(__DIR__) . DIRECTORY_SEPARATOR . 'src');
 
 /**
  * Dependency services.
diff --git a/config/test.php b/config/test.php
index <HASH>..<HASH> 100644
--- a/config/test.php
+++ b/config/test.php
@@ -2,4 +2,4 @@
 /**
  * Package prefix for autoloader.
  */
-$loader->addPrefix('Aura\Signal\\', dirname(__DIR__) . DIRECTORY_SEPARATOR . 'tests');
+$loader->add('Aura\Signal\\', dirname(__DIR__) . DIRECTORY_SEPARATOR . 'tests');
changed from loader addPrefix() to just add()