diff --git a/bench_test.go b/bench_test.go
index ff03e22f..ba955708 100644
--- a/bench_test.go
+++ b/bench_test.go
@@ -455,12 +455,12 @@ func newBenchmarkWriteTableCopyFromSrc(count int) pgx.CopyFromSource {
 		row: []interface{}{
 			"varchar_1",
 			"varchar_2",
-			pgtype.Text{},
+			&pgtype.Text{Status: pgtype.Null},
 			time.Date(2000, 1, 1, 0, 0, 0, 0, time.Local),
-			pgtype.Date{},
+			&pgtype.Date{Status: pgtype.Null},
 			1,
 			2,
-			pgtype.Int4{},
+			&pgtype.Int4{Status: pgtype.Null},
 			time.Date(2001, 1, 1, 0, 0, 0, 0, time.Local),
 			time.Date(2002, 1, 1, 0, 0, 0, 0, time.Local),
 			true,