diff --git a/src/Security/MemberAuthenticator/MemberAuthenticator.php b/src/Security/MemberAuthenticator/MemberAuthenticator.php
index 76127a995..bda474820 100644
--- a/src/Security/MemberAuthenticator/MemberAuthenticator.php
+++ b/src/Security/MemberAuthenticator/MemberAuthenticator.php
@@ -47,7 +47,7 @@ class MemberAuthenticator implements Authenticator
         // Optionally record every login attempt as a {@link LoginAttempt} object
         $this->recordLoginAttempt($data, $request, $member, $result->isValid());
 
-        if ($member) {
+        if ($member && $request->hasSession()) {
             $request->getSession()->clear('BackURL');
         }