diff --git a/test/litest-device-wacom-hid4800-pen.c b/test/litest-device-wacom-hid4800-pen.c
index 0a65919b..3f424851 100644
--- a/test/litest-device-wacom-hid4800-pen.c
+++ b/test/litest-device-wacom-hid4800-pen.c
@@ -39,7 +39,7 @@ static struct input_event proximity_in[] = {
 static struct input_event proximity_out[] = {
 	{ .type = EV_ABS, .code = ABS_X, .value = 0 },
 	{ .type = EV_ABS, .code = ABS_Y, .value = 0 },
-	{ .type = EV_MSC, .code = MSC_SERIAL, .value = 0 },
+	{ .type = EV_MSC, .code = MSC_SERIAL, .value = 297797542 },
 	{ .type = EV_KEY, .code = BTN_TOOL_PEN, .value = 0 },
 	{ .type = EV_SYN, .code = SYN_REPORT, .value = 0 },
 	{ .type = -1, .code = -1 },