diff --git a/controller/sources/fe_config/fe_config.pl b/controller/sources/fe_config/fe_config.pl
index 7e5eac4..9ee7552 100644
--- a/controller/sources/fe_config/fe_config.pl
+++ b/controller/sources/fe_config/fe_config.pl
@@ -531,7 +531,10 @@
 
 filter_by_roles(Config, UserRoles, Filtered) :-
     is_dict(Config),
-    Contexts = Config.get(contexts),
+    ( Contexts = Config.get(contexts)
+    ->  true
+    ;   Contexts = []
+    ),
     filter_by_roles(Contexts, UserRoles, FilteredContexts),
     Filtered0 = Config.put(contexts, FilteredContexts),
     Navigations = Filtered0.get(apps),