diff --git a/src/Service/Common/TeamerFilterHandler.php b/src/Service/Common/TeamerFilterHandler.php
index 4c09f36..e156550 100644
--- a/src/Service/Common/TeamerFilterHandler.php
+++ b/src/Service/Common/TeamerFilterHandler.php
@@ -25,7 +25,7 @@ class TeamerFilterHandler extends AbstractFilterHandler
             ->setPickupId($data['pickup_id'])
             ->setSkiLicense($data['ski_license'])
             ->setSnowboardLicense($data['snowboard_license'])
-            ->setDriverLicenseVerified($data['driver_license_verified'])
+            ->setDriverLicenseVerified((bool) ($data['driver_license_verified'] ?? false))
             ->setNoTrainings($data['no_trainings'])
         ;