diff --git a/test/benchmark/test-benchmark-buffer.js b/test/benchmark/test-benchmark-buffer.js
index 171f755647d21f..d3085796e1a651 100644
--- a/test/benchmark/test-benchmark-buffer.js
+++ b/test/benchmark/test-benchmark-buffer.js
@@ -13,7 +13,7 @@ runBenchmark('buffers',
                'charsPerLine=6',
                'encoding=utf8',
                'endian=BE',
-               'len=2',
+               'len=256',
                'linesCount=1',
                'method=',
                'n=1',