diff --git a/base/timer.hpp b/base/timer.hpp
index fbcd5b1ac9..6cb5fa0f65 100644
--- a/base/timer.hpp
+++ b/base/timer.hpp
@@ -1,24 +1,23 @@
 #pragma once
 #include "base.hpp"
-#include "../std/ctime.hpp"
+#include <boost/date_time/posix_time/posix_time.hpp>
 
 namespace my
 {
-  // TODO: Check std::clock() on iPhone and iPhone Simulator.
-
-  // Cross platform timer.
+  /// Cross platform timer
   class Timer
   {
   public:
-    Timer() {Reset();}
+    Timer() { Reset(); }
     double ElapsedSeconds() const
     {
-      return (clock() - m_StartTime) / static_cast<double>(CLOCKS_PER_SEC);
+      return (boost::posix_time::microsec_clock::local_time() - m_StartTime).total_milliseconds()
+          / 1000.0;
     }
 
-    void Reset() { m_StartTime = clock(); }
+    void Reset() { m_StartTime = boost::posix_time::microsec_clock::local_time(); }
   private:
-    clock_t m_StartTime;
+    boost::posix_time::ptime m_StartTime;
   };
 
 }