Index: dbLearnStar-webApp/src/main/java/dblearnstar/webapp/pages/admin/TestAdminPage.java
===================================================================
--- dbLearnStar-webApp/src/main/java/dblearnstar/webapp/pages/admin/TestAdminPage.java	(revision ee25809e5a6fb4a0fb719e5f304f7ce1b5b4e34b)
+++ dbLearnStar-webApp/src/main/java/dblearnstar/webapp/pages/admin/TestAdminPage.java	(revision e08ab042b51f60c31a1fe9a79b107d0b3b7a337a)
@@ -237,4 +237,5 @@
 	void onActionFromDeleteTestInstance(TestInstance testInstance) {
 		testInstance.getTestInstanceParameters().forEach(tip -> genericService.delete(tip));
+		testInstance.getTaskInTestInstances().forEach(tti -> genericService.delete(tti));
 		genericService.delete(testInstance);
 	}