diff --git a/quirks/50-system-apple.quirks b/quirks/50-system-apple.quirks
index 8e08e2c1..d5514bb7 100644
--- a/quirks/50-system-apple.quirks
+++ b/quirks/50-system-apple.quirks
@@ -7,7 +7,7 @@ MatchUdevType=touchpad
 ModelAppleTouchpad=1
 AttrSizeHint=104x75
 AttrTouchSizeRange=150:130
-AttrPalmSizeThreshold=800
+AttrPalmSizeThreshold=1600
 
 [Apple Touchpads Bluetooth]
 MatchVendor=0x05AC