diff --git a/drivers/staging/greybus/svc.c b/drivers/staging/greybus/svc.c
index ff89da6172c2..1cf608987c3b 100644
--- a/drivers/staging/greybus/svc.c
+++ b/drivers/staging/greybus/svc.c
@@ -161,7 +161,7 @@ static int gb_svc_pwrmon_sample_get(struct gb_svc *svc, u8 rail_id,
 		case GB_SVC_PWRMON_GET_SAMPLE_INVAL:
 			return -EINVAL;
 		case GB_SVC_PWRMON_GET_SAMPLE_NOSUPP:
-			return -ENOSYS;
+			return -ENOMSG;
 		default:
 			return -EIO;
 		}