diff --git a/pgtype/interval_test.go b/pgtype/interval_test.go
index 18e21ddd..76ea3240 100644
--- a/pgtype/interval_test.go
+++ b/pgtype/interval_test.go
@@ -33,31 +33,31 @@ func TestIntervalNormalize(t *testing.T) {
 	testutil.TestSuccessfulNormalize(t, []testutil.NormalizeTest{
 		{
 			SQL:   "select '1 second'::interval",
-			Value: pgtype.Interval{Microseconds: 1000000, Status: pgtype.Present},
+			Value: &pgtype.Interval{Microseconds: 1000000, Status: pgtype.Present},
 		},
 		{
 			SQL:   "select '1.000001 second'::interval",
-			Value: pgtype.Interval{Microseconds: 1000001, Status: pgtype.Present},
+			Value: &pgtype.Interval{Microseconds: 1000001, Status: pgtype.Present},
 		},
 		{
 			SQL:   "select '34223 hours'::interval",
-			Value: pgtype.Interval{Microseconds: 123202800000000, Status: pgtype.Present},
+			Value: &pgtype.Interval{Microseconds: 123202800000000, Status: pgtype.Present},
 		},
 		{
 			SQL:   "select '1 day'::interval",
-			Value: pgtype.Interval{Days: 1, Status: pgtype.Present},
+			Value: &pgtype.Interval{Days: 1, Status: pgtype.Present},
 		},
 		{
 			SQL:   "select '1 month'::interval",
-			Value: pgtype.Interval{Months: 1, Status: pgtype.Present},
+			Value: &pgtype.Interval{Months: 1, Status: pgtype.Present},
 		},
 		{
 			SQL:   "select '1 year'::interval",
-			Value: pgtype.Interval{Months: 12, Status: pgtype.Present},
+			Value: &pgtype.Interval{Months: 12, Status: pgtype.Present},
 		},
 		{
 			SQL:   "select '-13 mon'::interval",
-			Value: pgtype.Interval{Months: -13, Status: pgtype.Present},
+			Value: &pgtype.Interval{Months: -13, Status: pgtype.Present},
 		},
 	})
 }