Sorted include of headers.
diff --git a/src/commandlineflags.cc b/src/commandlineflags.cc
index aeb27ec..3e9a37a 100644
--- a/src/commandlineflags.cc
+++ b/src/commandlineflags.cc
@@ -14,10 +14,10 @@
#include "commandlineflags.h"
+#include <cstdlib>
#include <cstring>
#include <iostream>
#include <limits>
-#include <cstdlib>
namespace benchmark {
// Parses 'str' for a 32-bit signed integer. If successful, writes
diff --git a/test/benchmark_test.cc b/test/benchmark_test.cc
index 093a935..2d268ce 100644
--- a/test/benchmark_test.cc
+++ b/test/benchmark_test.cc
@@ -4,6 +4,7 @@
#include <math.h>
#include <stdint.h>
+#include <cstdlib>
#include <iostream>
#include <limits>
#include <list>
@@ -13,7 +14,6 @@
#include <sstream>
#include <string>
#include <vector>
-#include <cstdlib>
#if defined(__GNUC__)
# define BENCHMARK_NOINLINE __attribute__((noinline))
