diff --git a/benchmarks/express/static.js b/benchmarks/express/static.js
index c7c97edc..a45cbab0 100644
--- a/benchmarks/express/static.js
+++ b/benchmarks/express/static.js
@@ -9,7 +9,7 @@ configure(function(){
 })
 
 get('/', function(){
-  this.sendfile('benchmarks/shared/jquery.js', { bufferSize: 8 * 1024 })
+  this.sendfile('benchmarks/shared/jquery.js')
 })
 
 run()
\ No newline at end of file
diff --git a/benchmarks/express/static.large.js b/benchmarks/express/static.large.js
index c7129065..5756b300 100644
--- a/benchmarks/express/static.large.js
+++ b/benchmarks/express/static.large.js
@@ -9,7 +9,7 @@ configure(function(){
 })
 
 get('/', function(){
-  this.sendfile('benchmarks/shared/huge.js', { bufferSize: 8 * 1024 })
+  this.sendfile('benchmarks/shared/huge.js')
 })
 
 run()
\ No newline at end of file