# Adjust Window Level is not working (nightly release 4.11.0)

**URL:** <https://discourse.slicer.org/t/adjust-window-level-is-not-working-nightly-release-4-11-0/6817>\
**Category:** Support\
**Created:** [May 16, 2019, 2:22pm UTC](https://discourse.slicer.org/t/adjust-window-level-is-not-working-nightly-release-4-11-0/6817 "2019-05-16T14:22:21Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![cpinter](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/cpinter/32/7995_2.png) [@cpinter](https://discourse.slicer.org/u/cpinter)\
**Post date:** [May 16, 2019, 2:43pm UTC](https://discourse.slicer.org/t/adjust-window-level-is-not-working-nightly-release-4-11-0/6817/2 "2019-05-16T14:43:34Z")

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HI Joost,

Mouse modes have recently changed. To window/level you need to switch to W/L mode by clicking on the button on the toolbar that is activated in this screenshot:  
 ![image](https://us1.discourse-cdn.com/flex002/uploads/slicer/original/3X/c/b/cb0efdef9970062e2f46839e8477554354ad1b11.png)

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_[View the full topic](https://discourse.slicer.org/t/adjust-window-level-is-not-working-nightly-release-4-11-0/6817)._