diff --git a/benchmark/common.js b/benchmark/common.js
index 495d6fdf365871..94f11a2be96933 100644
--- a/benchmark/common.js
+++ b/benchmark/common.js
@@ -208,11 +208,14 @@ Benchmark.prototype.report = function(rate, elapsed) {
   });
 };
 
-exports.v8ForceOptimization = function(method, ...args) {
+exports.v8ForceOptimization = function(method) {
   if (typeof method !== 'function')
     return;
+
   const v8 = require('v8');
   v8.setFlagsFromString('--allow_natives_syntax');
+
+  const args = Array.prototype.slice.call(arguments, 1);
   method.apply(null, args);
   eval('%OptimizeFunctionOnNextCall(method)');
   method.apply(null, args);
diff --git a/benchmark/compare.R b/benchmark/compare.R
index 1200340f329837..b4316ca7f81600 100644
--- a/benchmark/compare.R
+++ b/benchmark/compare.R
@@ -16,8 +16,12 @@ if (!is.null(args.options$help) ||
 
 plot.filename = args.options$plot;
 
-dat = read.csv(file('stdin'));
+dat = read.csv(
+  file('stdin'),
+  colClasses=c('character', 'character', 'character', 'numeric', 'numeric')
+);
 dat = data.frame(dat);
+
 dat$nameTwoLines = paste0(dat$filename, '\n', dat$configuration);
 dat$name = paste0(dat$filename, dat$configuration);
 
diff --git a/benchmark/compare.js b/benchmark/compare.js
index de328d60fcbae0..ea431b18cb4cd9 100644
--- a/benchmark/compare.js
+++ b/benchmark/compare.js
@@ -40,8 +40,8 @@ if (benchmarks.length === 0) {
 // Create queue from the benchmarks list such both node versions are tested
 // `runs` amount of times each.
 const queue = [];
-for (let iter = 0; iter < runs; iter++) {
-  for (const filename of benchmarks) {
+for (const filename of benchmarks) {
+  for (let iter = 0; iter < runs; iter++) {
     for (const binary of binaries) {
       queue.push({ binary, filename, iter });
     }