diff --git a/benchmark/benchmark_test.go b/benchmark/benchmark_test.go
index 5d3d2ed..65797b2 100644
--- a/benchmark/benchmark_test.go
+++ b/benchmark/benchmark_test.go
@@ -157,6 +157,7 @@ func BenchmarkReferenceFile(b *testing.B) {
 		if err != nil {
 			b.Fatal(err)
 		}
+		b.SetBytes(int64(len(bytes)))
 		b.ReportAllocs()
 		b.ResetTimer()
 		for i := 0; i < b.N; i++ {