diff --git a/samples/drawer-sample4.lua b/samples/drawer-sample4.lua
index 7cdc30a..4836870 100644
--- a/samples/drawer-sample4.lua
+++ b/samples/drawer-sample4.lua
@@ -8,19 +8,10 @@ function on_drawer_open()
 end
 
 function on_icons_ready(icons)
-    names = map(pkgs, function(it) return apps:name(it) end)
+    names = map(function(it) return apps:name(it) end, pkgs)
     drawer:show_list(names, icons, nil, true)
 end
 
 function on_click(idx)
     apps:launch(pkgs[idx])
 end
-
-function map(tbl, f)
-    local ret = {}
-    for k,v in pairs(tbl) do
-        ret[k] = f(v)
-    end
-    return ret
-end
-