diff --git a/html/modules/custom/reliefweb_entities/src/Services/JobFormAlter.php b/html/modules/custom/reliefweb_entities/src/Services/JobFormAlter.php
index 05fb1b849..7f20810be 100644
--- a/html/modules/custom/reliefweb_entities/src/Services/JobFormAlter.php
+++ b/html/modules/custom/reliefweb_entities/src/Services/JobFormAlter.php
@@ -54,7 +54,9 @@ protected function addBundleFormAlterations(array &$form, FormStateInterface $fo
$this->addSelectionLimit($form, 'field_career_categories', 1);
// Prevent Drupal from returning "An illegal choice was selected" error
// message instead of indicating the field is mandatory.
- $form['field_career_categories']['widget']['#default_value'] = NULL;
+ if (empty($form['field_career_categories']['widget']['#default_value'])) {
+ $form['field_career_categories']['widget']['#default_value'] = NULL;
+ }
// Disable themes for some career categories and limit selection.
$this->alterJobThemeField($form, $form_state);