diff --git a/src/Test/FixturesTrait.php b/src/Test/FixturesTrait.php
index 6a1375c6..18b892c5 100644
--- a/src/Test/FixturesTrait.php
+++ b/src/Test/FixturesTrait.php
@@ -26,7 +26,7 @@
  */
 trait FixturesTrait
 {
-    protected $containers = [];
+    protected $containers;
 
     /**
      * @var array