diff --git a/iscsi-scst/kernel/isert-scst/iser_buf.c b/iscsi-scst/kernel/isert-scst/iser_buf.c
index 0380fae93..20a5f5bf6 100644
--- a/iscsi-scst/kernel/isert-scst/iser_buf.c
+++ b/iscsi-scst/kernel/isert-scst/iser_buf.c
@@ -85,7 +85,7 @@ static int isert_buf_alloc_pg(struct ib_device *ib_dev,
 	goto out;
 
 out_map_failed:
-	for (; i > 0; --i)
+	for (; i >= 0; --i)
 		__free_page(sg_page(&isert_buf->sg[i]));
 	kfree(isert_buf->sg);
 	isert_buf->sg = NULL;