diff --git a/drivers/input/mouse/logips2pp.c b/drivers/input/mouse/logips2pp.c
index de745d7..ab5dc5f 100644
--- a/drivers/input/mouse/logips2pp.c
+++ b/drivers/input/mouse/logips2pp.c
@@ -219,7 +219,7 @@
 				PS2PP_WHEEL | PS2PP_SIDE_BTN | PS2PP_TASK_BTN |
 				PS2PP_EXTRA_BTN | PS2PP_NAV_BTN | PS2PP_HWHEEL },
 		{ 72,	PS2PP_KIND_TRACKMAN,	0 },			/* T-CH11: TrackMan Marble */
-		{ 73,	0,			PS2PP_SIDE_BTN },
+		{ 73,	PS2PP_KIND_TRACKMAN,	PS2PP_SIDE_BTN },	/* TrackMan FX */
 		{ 75,	PS2PP_KIND_WHEEL,	PS2PP_WHEEL },
 		{ 76,	PS2PP_KIND_WHEEL,	PS2PP_WHEEL },
 		{ 79,	PS2PP_KIND_TRACKMAN,	PS2PP_WHEEL },		/* TrackMan with wheel */