# Disable specific modules on startup

**URL:** <https://discourse.slicer.org/t/disable-specific-modules-on-startup/8263>\
**Category:** Development\
**Created:** [September 2, 2019, 4:43pm UTC](https://discourse.slicer.org/t/disable-specific-modules-on-startup/8263 "2019-09-02T16:43:14Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![dtan](https://avatars.discourse-cdn.com/v4/letter/d/ba8739/32.png) [@dtan](https://discourse.slicer.org/u/dtan)\
**Post date:** [September 2, 2019, 4:43pm UTC](https://discourse.slicer.org/t/disable-specific-modules-on-startup/8263/1 "2019-09-02T16:43:14Z")

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I’m trying to disable modules on startup using `./Slicer -modules-to-ignore "Welcome, data"`, but I notice that only the welcome module is disabled while data module is still present. Am I using this command incorrectly?

Also, is there a way to change the default module through cli?

Thanks!

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<div class="post-metadata">

**Author:** ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)\
**Post date:** [September 2, 2019, 6:34pm UTC](https://discourse.slicer.org/t/disable-specific-modules-on-startup/8263/2 "2019-09-02T18:34:09Z")

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Hi -

There can’t be a space, and also it’s case-sensitive, so you need:

```auto
./Slicer -modules-to-ignore Welcome,Data

```