diff --git a/ansible/roles/osx/vars/defaults.yml b/ansible/roles/osx/vars/defaults.yml
index 8fb50324..21145e13 100644
--- a/ansible/roles/osx/vars/defaults.yml
+++ b/ansible/roles/osx/vars/defaults.yml
@@ -45,6 +45,10 @@ osx_defaults:
key: com.apple.mouse.tapBehavior
type: bool
value: true
+ - # only show scrollbars when scrolling
+ key: AppleShowScrollBars
+ type: string
+ value: WhenScrolling
- # enable Debug menu in Safari
domain: com.apple.Safari