diff --git a/drivers/staging/greybus/gpio.c b/drivers/staging/greybus/gpio.c
index 4af5050edea0..458565a7afb8 100644
--- a/drivers/staging/greybus/gpio.c
+++ b/drivers/staging/greybus/gpio.c
@@ -116,7 +116,7 @@ struct gb_gpio_set_value_request {
 
 struct gb_gpio_set_debounce_request {
 	__u8	which;
-	__le16	usec;
+	__le16	usec __packed;
 };
 /* debounce response has no payload */