diff --git a/src/hidpp-generic.c b/src/hidpp-generic.c
index cfed6754..10c7c1ae 100644
--- a/src/hidpp-generic.c
+++ b/src/hidpp-generic.c
@@ -149,6 +149,7 @@ static const struct hidpp20_1b04_physical_mapping hidpp20_1b04_physical_mapping[
 	BUTTON_PHYS_MAPPING(98, "Do Nothing"		, RATBAG_BUTTON_TYPE_UNKNOWN),
 	BUTTON_PHYS_MAPPING(156, "Gesture Button"	, RATBAG_BUTTON_TYPE_UNKNOWN),
 	BUTTON_PHYS_MAPPING(157, "SmartShift"		, RATBAG_BUTTON_TYPE_WHEEL_RATCHET_MODE_SHIFT),
+	BUTTON_PHYS_MAPPING(169, "Gesture Button"	, RATBAG_BUTTON_TYPE_MIDDLE),
 	BUTTON_PHYS_MAPPING(221, "LedToggle"		, RATBAG_BUTTON_TYPE_UNKNOWN),
 };