diff --git a/res/modules/gui_util.lua b/res/modules/internal/gui_util.lua
similarity index 100%
rename from res/modules/gui_util.lua
rename to res/modules/internal/gui_util.lua
diff --git a/res/scripts/stdlib.lua b/res/scripts/stdlib.lua
index 85321eef..d9190bce 100644
--- a/res/scripts/stdlib.lua
+++ b/res/scripts/stdlib.lua
@@ -146,7 +146,7 @@ function events.emit(event, ...)
     return result
 end
 
-gui_util = require "core:gui_util"
+gui_util = require "core:internal/gui_util"
 
 Document = gui_util.Document
 RadioGroup = gui_util.RadioGroup