diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4334e54..46d40db 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,10 @@ Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
 
+## [2.3.1] 2026-11-02
+
+- Fixed the search button validation.
+
 ## [2.3.0] 2026-10-23
 
 - Drupal 11 compatibility.
@@ -117,7 +121,8 @@ Versioning](https://semver.org/spec/v2.0.0.html).
 - Added OS2Forms organisation module
 - Added OS2Forms Organisation OpenID Connect module
 
-[Unreleased]: https://github.com/itk-dev/os2forms_organisation/compare/2.3.0...HEAD
+[Unreleased]: https://github.com/itk-dev/os2forms_organisation/compare/2.3.1...HEAD
+[2.3.1]: https://github.com/itk-dev/os2forms_organisation/compare/2.3.0...2.3.1
 [2.3.0]: https://github.com/itk-dev/os2forms_organisation/compare/2.2.2...2.3.0
 [2.2.2]: https://github.com/itk-dev/os2forms_organisation/compare/2.2.1...2.2.2
 [2.2.1]: https://github.com/itk-dev/os2forms_organisation/compare/2.2.0...2.2.1
diff --git a/src/Element/MineOrganisationsData.php b/src/Element/MineOrganisationsData.php
index 989543f..e6e2f69 100644
--- a/src/Element/MineOrganisationsData.php
+++ b/src/Element/MineOrganisationsData.php
@@ -21,6 +21,7 @@ public static function getCompositeElements(array $element): array {
     $elements = [];
 
     $elements['search'] = [
+      '#title' => t('User search'),
       '#type' => 'markup',
       '#attributes' => [
         'class' => ['os2forms-organisation-search'],