diff --git a/prisma/migrations/20230811172050_denorm_anon_tips/migration.sql b/prisma/migrations/20230811172050_denorm_anon_tips/migration.sql
new file mode 100644
index 00000000..b9bcd640
--- /dev/null
+++ b/prisma/migrations/20230811172050_denorm_anon_tips/migration.sql
@@ -0,0 +1,21 @@
+-- make excaption for anon users
+CREATE OR REPLACE FUNCTION sats_after_tip(item_id INTEGER, user_id INTEGER, tip_msats BIGINT) RETURNS INTEGER AS $$
+DECLARE
+    item "Item";
+BEGIN
+    SELECT * FROM "Item" WHERE id = item_id INTO item;
+    IF user_id <> 27 AND item."userId" = user_id THEN
+        RETURN 0;
+    END IF;
+
+    UPDATE "Item"
+    SET "msats" = "msats" + tip_msats
+    WHERE id = item.id;
+
+    UPDATE "Item"
+    SET "commentMsats" = "commentMsats" + tip_msats
+    WHERE id <> item.id and path @> item.path;
+
+    RETURN 1;
+END;
+$$ LANGUAGE plpgsql;
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