diff --git a/test/sequential/test-benchmark-buffer.js b/test/sequential/test-benchmark-buffer.js
index 99a00c2ab84b31..26600cf4f26a87 100644
--- a/test/sequential/test-benchmark-buffer.js
+++ b/test/sequential/test-benchmark-buffer.js
@@ -8,6 +8,7 @@ runBenchmark('buffers',
              [
                'aligned=true',
                'args=1',
+               'buffer=fast',
                'encoding=utf8',
                'len=2',
                'method=',