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# reject-import-preferences-module
Rejects usage of `Preferences.sys.mjs`, which is deprecated. Use
`Services.prefs` directly instead.
## Examples of incorrect code for this rule
```js
import { Preferences } from "resource://gre/modules/Preferences.sys.mjs";
ChromeUtils.defineESModuleGetters(lazy, {
Preferences: "resource://gre/modules/Preferences.sys.mjs",
});
```
## Examples of correct code for this rule
```js
Services.prefs.getStringPref("my.pref", "default");
```