diff --git a/src/Controller/Booking/Create/Step2Controller.php b/src/Controller/Booking/Create/Step2Controller.php
index 57719ac..6fdf70a 100644
--- a/src/Controller/Booking/Create/Step2Controller.php
+++ b/src/Controller/Booking/Create/Step2Controller.php
@@ -157,6 +157,11 @@ class Step2Controller extends AbstractController
         ;
         if (true === $form->isSubmitted() && true === $isDummyDataFill) {
             $this->dummyDataFillService->fill($bookingDto->participants[$index], $index);
+
+            // Keep behavior consistent with cards view: newly filled participant data
+            // (especially dateOfBirth) must immediately trigger mandatory service preselection.
+            $this->bookingService->preselectMandatoryServices($bookingDto);
+
             $bookingDto->bookingStatus = Constants::BOOKING_STATUS_OPEN;
             $this->bookingService->saveBookingDto($request, $bookingDto, BookingDto::MODE_CREATE);