diff --git a/pg/tc.sql.tbl b/pg/tc.sql.tbl
index 12b658531ad1fae1bb6d2e8021074b096ab1ccab..b9e0c6e8a0f30b72e313b4387d6a0e5c7b75deaa 100644
--- a/pg/tc.sql.tbl
+++ b/pg/tc.sql.tbl
@@ -4,9 +4,9 @@ drop table if exists par;
 
 SET work_mem TO '1 GB';
 
-create TEMPORARY table par(x integer not null, y integer not null);
+create TEMPORARY table par(a integer not null, b integer not null);
 
 \echo 'LOAD DATA'
 \copy par from 'INSTANCE';
 
-create index par_y on par(y);
+create index par_b on par(b);