diff --git a/createas.c b/createas.c
index ee26442..79bb8d1 100644
--- a/createas.c
+++ b/createas.c
@@ -1078,7 +1078,7 @@ CreateIndexOnIMMV(Query *query, Relation matviewRel, bool is_create)
 
 
 	/*
-	 * For aggregate withoug GROUP BY, we do not need to create an index
+	 * For aggregate without GROUP BY, we do not need to create an index
 	 * because the view has only one row.
 	 */
 	if (query->hasAggs && query->groupClause == NIL)
diff --git a/expected/pg_ivm.out b/expected/pg_ivm.out
index 709e943..3e74c52 100644
--- a/expected/pg_ivm.out
+++ b/expected/pg_ivm.out
@@ -286,9 +286,6 @@ ROLLBACK;
 -- support aggregate functions without GROUP clause
 BEGIN;
 SELECT create_immv('mv_ivm_group',  'SELECT SUM(j), COUNT(j), AVG(j) FROM mv_base_a');
-NOTICE:  could not create an index on immv "mv_ivm_group" automatically
-DETAIL:  This target list does not have all the primary key columns, or this view does not contain GROUP BY or DISTINCT clause.
-HINT:  Create an index on the immv for efficient incremental maintenance.
  create_immv 
 -------------
            1
@@ -318,9 +315,6 @@ ROLLBACK;
 -- TRUNCATE a base table in aggregate views without GROUP clause
 BEGIN;
 SELECT create_immv('mv_ivm_group', 'SELECT SUM(j), COUNT(j), AVG(j) FROM mv_base_a');
-NOTICE:  could not create an index on immv "mv_ivm_group" automatically
-DETAIL:  This target list does not have all the primary key columns, or this view does not contain GROUP BY or DISTINCT clause.
-HINT:  Create an index on the immv for efficient incremental maintenance.
  create_immv 
 -------------
            1
@@ -437,9 +431,6 @@ ROLLBACK;
 -- support MIN(), MAX() aggregate functions without GROUP clause
 BEGIN;
 SELECT create_immv('mv_ivm_min_max', 'SELECT MIN(j), MAX(j)  FROM mv_base_a');
-NOTICE:  could not create an index on immv "mv_ivm_min_max" automatically
-DETAIL:  This target list does not have all the primary key columns, or this view does not contain GROUP BY or DISTINCT clause.
-HINT:  Create an index on the immv for efficient incremental maintenance.
  create_immv 
 -------------
            1