Add missing interface implementation

diff --git a/wcfsetup/install/files/lib/system/form/builder/field/SelectFormField.class.php b/wcfsetup/install/files/lib/system/form/builder/field/SelectFormField.class.php
index 26015d2b3f834ba630a6314cc019219bc93acf0f..638cc25a4e383508ed11b28ca3639df091ec3d5d 100644 (file)
--- a/wcfsetup/install/files/lib/system/form/builder/field/SelectFormField.class.php
+++ b/wcfsetup/install/files/lib/system/form/builder/field/SelectFormField.class.php
@@ -14,7 +14,8 @@ use wcf\system\form\builder\field\validation\FormFieldValidationError;
  */
 final class SelectFormField extends AbstractFormField implements
     ICssClassFormField,
-    IImmutableFormField
+    IImmutableFormField,
+    ISelectionFormField
 {
     use TCssClassFormField;
     use TImmutableFormField;