# How to fix the populating font family aliases issue

**URL:** <https://discourse.slicer.org/t/how-to-fix-the-populating-font-family-aliases-issue/32739>\
**Category:** Support\
**Tags:** bug\
**Created:** [November 11, 2023, 1:26pm UTC](https://discourse.slicer.org/t/how-to-fix-the-populating-font-family-aliases-issue/32739 "2023-11-11T13:26:42Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Koko000000000000000](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/koko000000000000000/32/68269_2.png) [@Koko000000000000000](https://discourse.slicer.org/u/Koko000000000000000)\
**Post date:** [November 11, 2023, 1:26pm UTC](https://discourse.slicer.org/t/how-to-fix-the-populating-font-family-aliases-issue/32739/1 "2023-11-11T13:26:42Z")

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I just installed slicer on my MacbookPro that has an M2 chip, but I’m face with this problem Python 3.9.10 (main, Aug 19 2023, 07:11:06)  
[Clang 14.0.6 ([https://github.com/tru/llvm-release-build](https://github.com/tru/llvm-release-build) 686807a176470032c208f2 on darwin

> > >

[Qt] Populating font family aliases took 147 ms. Replace uses of missing font family “.AppleSystemUIFont” with one that exists to avoid this cost.  
and I don’t know how tix it. I did try to specify a font in the slicer script using the python console, but nothing worked. can someone please help me fix this issue ?

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**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:** [November 11, 2023, 2:41pm UTC](https://discourse.slicer.org/t/how-to-fix-the-populating-font-family-aliases-issue/32739/2 "2023-11-11T14:41:41Z")

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It would be great if you could investigate this font issue further. I get the same message on mac pro (intel). We tried changing the font in the UI files but couldn’t find anything that made a difference.

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**Author:** ![Koko000000000000000](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/koko000000000000000/32/68269_2.png) [@Koko000000000000000](https://discourse.slicer.org/u/Koko000000000000000)\
**Post date:** [November 11, 2023, 5:14pm UTC](https://discourse.slicer.org/t/how-to-fix-the-populating-font-family-aliases-issue/32739/3 "2023-11-11T17:14:27Z")

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I did try changing the font to Arial, and it worked for a while but then it had the same message instead, the missing font was “Menlo” even though it’s available on my device. I keep trying to change the fonts but nothing happens.