diff -r 1a0ac419f714 -r bd1a76c91d5b src/java/de/uapcore/lightpit/modules/ErrorModule.java
--- a/src/java/de/uapcore/lightpit/modules/ErrorModule.java	Sat Mar 31 18:11:09 2018 +0200
+++ b/src/java/de/uapcore/lightpit/modules/ErrorModule.java	Sat Mar 31 19:35:04 2018 +0200
@@ -43,8 +43,8 @@
 @LightPITModule(
         bundleBaseName = "de.uapcore.lightpit.resources.localization.error",
         modulePath = "error",
-        menuKey = "",
-        titleKey = "title"
+        titleKey = "title",
+        systemModule = true
 )
 @WebServlet(
         name = "ErrorModule",