diff --git a/config/services.yaml b/config/services.yaml
index 28876ee..80958e5 100644
--- a/config/services.yaml
+++ b/config/services.yaml
@@ -183,7 +183,6 @@ services:
         arguments:
             $handlers:
                 # Simple handlers with no external dependencies - instantiated directly
-                - 'App\Form\Service\ParticipantDateOfBirthFieldHandler'
                 - 'App\Form\Service\ParticipantAssignedRoomFieldHandler'
                 - 'App\Form\Service\ParticipantRemarksRoomFieldHandler'
                 - 'App\Form\Service\ParticipantAdditionalServicesFieldHandler'
@@ -200,6 +199,7 @@ services:
                 - 'App\Form\Service\ParticipantRentalInsuranceFieldHandler'
                 - 'App\Form\Service\ParticipantLicensePlateFieldHandler'
                 # Complex handlers with dependencies - use service references
+                - '@App\Form\Service\ParticipantDateOfBirthFieldHandler'
                 - '@App\Form\Service\ParticipantTransportationDiscountReplacementFieldHandler'
                 - '@App\Form\Service\ParticipantBulkInsuranceFieldHandler'
                 - '@App\Form\Service\ParticipantInsuranceFieldHandler'