diff --git a/lib/auth.lua b/lib/auth.lua
index 9c4aeb9..4ea0b63 100644
--- a/lib/auth.lua
+++ b/lib/auth.lua
@@ -80,7 +80,7 @@ function list_user_groups(username)
                 io.write("Invalid token\n")
                 return
             else
-                return list_to_string(msg)
+                return msg
             end
         end
     end
diff --git a/packages/auth.lua b/packages/auth.lua
index 09112bf..36922b3 100644
--- a/packages/auth.lua
+++ b/packages/auth.lua
@@ -101,7 +101,7 @@ elseif action == "group" then
 
     if subaction == "list" then
         local result = auth.list_user_groups(settings.get("auth.username"))
-        io.write("Groups: " .. result .. "\n")
+        io.write("Groups: " .. auth.list_to_string(result) .. "\n")
     elseif subaction == "add" then
         local target_user = args[3]
         local group = args[4]