diff --git a/modules/mod_acl_adminonly/mod_acl_adminonly.erl b/modules/mod_acl_adminonly/mod_acl_adminonly.erl
index 809921c7ca..72dffd208b 100644
--- a/modules/mod_acl_adminonly/mod_acl_adminonly.erl
+++ b/modules/mod_acl_adminonly/mod_acl_adminonly.erl
@@ -38,6 +38,8 @@
 -include("zotonic.hrl").
 
 %% @doc Check if the user is allowed to perform Action on Object
+observe_acl_is_allowed(#acl_is_allowed{object=undefined}, _Context) ->
+    undefined;
 observe_acl_is_allowed(#acl_is_allowed{action=view, object=Id}, #context{user_id=undefined} = Context) ->
     Acl = m_rsc:get_acl_props(Id, Context),
     case Acl#acl_props.is_published of
diff --git a/modules/mod_acl_simple_roles/mod_acl_simple_roles.erl b/modules/mod_acl_simple_roles/mod_acl_simple_roles.erl
index 315fe1c102..3c70613482 100644
--- a/modules/mod_acl_simple_roles/mod_acl_simple_roles.erl
+++ b/modules/mod_acl_simple_roles/mod_acl_simple_roles.erl
@@ -50,6 +50,8 @@
 
 %% @doc Check if the user is allowed to perform Action on Object
 %% @todo #acl_edge
+observe_acl_is_allowed(#acl_is_allowed{object=undefined}, _Context) ->
+    undefined;
 observe_acl_is_allowed(#acl_is_allowed{action=view, object=Id}, #context{user_id=undefined} = Context) ->
     is_view_public(Id, Context);
 observe_acl_is_allowed(#acl_is_allowed{}, #context{user_id=undefined}) ->