diff --git a/includes/core/class-form.php b/includes/core/class-form.php
index 2e4b37aa..d70c989f 100644
--- a/includes/core/class-form.php
+++ b/includes/core/class-form.php
@@ -662,7 +662,7 @@ if ( ! class_exists( 'um\core\Form' ) ) {
 										case 'multiselect':
 										case 'radio':
 										case 'checkbox':
-											$form[ $k ] = is_array( $form[ $k ] ) ? array_map( 'sanitize_text_field', $form[ $k ] ) : array( sanitize_text_field( $form[ $k ] ) );
+											$form[ $k ] = is_array( $form[ $k ] ) ? array_map( 'sanitize_text_field', $form[ $k ] ) : sanitize_text_field( $form[ $k ] );
 											break;
 									}
 								}