diff --git a/drivers/pwm/pwm-cros-ec.c b/drivers/pwm/pwm-cros-ec.c
index f6ca4e8c6253..9c13694eaa24 100644
--- a/drivers/pwm/pwm-cros-ec.c
+++ b/drivers/pwm/pwm-cros-ec.c
@@ -75,8 +75,8 @@ static int __cros_ec_pwm_get_duty(struct cros_ec_device *ec, u8 index,
 
 	msg->version = 0;
 	msg->command = EC_CMD_PWM_GET_DUTY;
-	msg->insize = sizeof(*params);
-	msg->outsize = sizeof(*resp);
+	msg->insize = sizeof(*resp);
+	msg->outsize = sizeof(*params);
 
 	params->pwm_type = EC_PWM_TYPE_GENERIC;
 	params->index = index;