# Mac editor - Source control diff tool can't be changed **URL:** \ **Category:** Pipeline & Plugins\ **Tags:** bug, MAC, unreal-engine, editor, question\ **Created:** [March 16, 2017, 11:26am UTC](https://forums.unrealengine.com/t/mac-editor-source-control-diff-tool-cant-be-changed/388095 "2017-03-16T11:26:42Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![anonymous\_user\_64832765](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_64832765](https://forums.unrealengine.com/u/anonymous_user_64832765)\ **Post date:** [March 16, 2017, 11:26am UTC](https://forums.unrealengine.com/t/mac-editor-source-control-diff-tool-cant-be-changed/388095/1 "2017-03-16T11:26:42Z")
On MacOS version 10.12.3, with UE 4.14.3, in the editor preferences → General → Loading & Saving, Source Control, the “Tool for diffing text” dialog box doesn’t let you choose any application, because the file extension is set to \*.exe which is obviously ok for Windows but not on Mac. ![130284-screen+shot+2017-03-16+at+12.23.38.png](https://d3kjluh73b9h9o.cloudfront.net/original/4X/a/6/8/a68a07e52b6a343fe01a5f74e98420137981662c.png) ---
**Author:** ![anonymous\_user\_bcdd396d](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_bcdd396d](https://forums.unrealengine.com/u/anonymous_user_bcdd396d)\ **Post date:** [March 21, 2017, 2:45pm UTC](https://forums.unrealengine.com/t/mac-editor-source-control-diff-tool-cant-be-changed/388095/2 "2017-03-21T14:45:48Z")
Hi , Thank you for submitting a bug report. I have reproduced the issue and logged it as **[UE-43123](https://issues.unrealengine.com/issue/UE-43123)** which you can track on the following link: [Unreal Engine Issues](https://issues.unrealengine.com/issue/UE-43123). Please be aware that since the issue must be reviewed and prioritized by our development staff, it may be a while before it can be addressed. -.