diff --git a/helpers.lua b/helpers.lua
index 9afa349..786076c 100644
--- a/helpers.lua
+++ b/helpers.lua
@@ -540,14 +540,16 @@ function get_data_for(view)
 
         -- Add user's accessible URLs using the ACLs.
         -- It is typically used to build the app list.
-        for url, name in pairs(conf["users"][user]) do
+        if conf["users"][user] then
+            for url, name in pairs(conf["users"][user]) do
 
-            if ngx.var.host == conf["local_portal_domain"] then
-                url = string.gsub(url, conf["original_portal_domain"], conf["local_portal_domain"])
+                if ngx.var.host == conf["local_portal_domain"] then
+                    url = string.gsub(url, conf["original_portal_domain"], conf["local_portal_domain"])
+                end
+                table.insert(sorted_apps, name)
+                table.sort(sorted_apps)
+                table.insert(data["app"], index_of(sorted_apps, name), { url = url, name = name })
             end
-            table.insert(sorted_apps, name)
-            table.sort(sorted_apps)
-            table.insert(data["app"], index_of(sorted_apps, name), { url = url, name = name })
         end
     end