diff --git a/scst/src/scst_sysfs.c b/scst/src/scst_sysfs.c
index d4f781d1a..71be58f89 100644
--- a/scst/src/scst_sysfs.c
+++ b/scst/src/scst_sysfs.c
@@ -1268,6 +1268,7 @@ static int __scst_process_luns_mgmt_store(char *buffer,
 			goto out_unlock;
 		} else if (virt_lun > SCST_MAX_LUN) {
 			PRINT_ERROR("Too big LUN %ld (max %d)", virt_lun, SCST_MAX_LUN);
+			res = -EINVAL;
 			goto out_unlock;
 		}