diff --git a/lib/SimpleSAML/Compat/SspContainer.php b/lib/SimpleSAML/Compat/SspContainer.php
index dd15975a42ccbf63d92d037c7d9a49afa3e1d704..0da4b6fbae410dc2b085a83a46547693a2b66372 100644
--- a/lib/SimpleSAML/Compat/SspContainer.php
+++ b/lib/SimpleSAML/Compat/SspContainer.php
@@ -16,10 +16,6 @@ class SspContainer extends AbstractContainer
     /** @var \Psr\Log\LoggerInterface */
     protected LoggerInterface $logger;
 
-    /** @var array */
-    protected array $registry = [];
-
-
     /**
      * Create a new SimpleSAMLphp compatible container.
      */