diff --git a/app/controllers/studiengaenge/shared_version.php b/app/controllers/studiengaenge/shared_version.php
index b143d407d00829558618d12c93eb058ea3f1c943..53243284601ac2c8bb2114426d9cdf5e9b4873d8 100644
--- a/app/controllers/studiengaenge/shared_version.php
+++ b/app/controllers/studiengaenge/shared_version.php
@@ -5,7 +5,7 @@
  * @since       3.5
  */
 
-class SharedVersionController extends MVVController
+abstract class SharedVersionController extends MVVController
 {
     public function version_action($stgteil_id, $version_id = null)
     {