diff --git a/src/Authenticator/SessionAuthenticator.php b/src/Authenticator/SessionAuthenticator.php
index 2181d163..7e7fc854 100644
--- a/src/Authenticator/SessionAuthenticator.php
+++ b/src/Authenticator/SessionAuthenticator.php
@@ -25,7 +25,7 @@
 /**
  * Session Authenticator
  */
-class SessionAuthenticator extends AbstractAuthenticator implements PersistenceInterface, ImpersonationInterface
+class SessionAuthenticator extends AbstractAuthenticator implements ImpersonationInterface
 {
     /**
      * Default config for this object.