diff --git a/brmbar3/schema/0020-shop-undo.sql b/brmbar3/schema/0020-shop-undo.sql
index a279580..d2d12b3 100644
--- a/brmbar3/schema/0020-shop-undo.sql
+++ b/brmbar3/schema/0020-shop-undo.sql
@@ -41,7 +41,7 @@ DECLARE
 	v_old_split public.transaction_splits%ROWTYPE;
 BEGIN
 	SELECT * INTO v_old_trn FROM public.transactions WHERE id = i_id;
-        INSERT INTO transactions ("description") VALUES ('undo '||o_id||' ('||v_old_trn.description||')') RETURNING id into v_ntrn_id;
+        INSERT INTO transactions ("description") VALUES ('undo '||i_id||' ('||v_old_trn.description||')') RETURNING id into v_ntrn_id;
 	FOR v_old_split IN
 		SELECT * FROM transaction_splits WHERE "transaction" = i_id
 	LOOP