diff --git a/base/timer.cc b/base/timer.cc
index da36e2cb67..f8043c05b8 100644
--- a/base/timer.cc
+++ b/base/timer.cc
@@ -13,6 +13,8 @@
 
 #if !defined(_MSC_VER)
 #include <sys/time.h>
+#else
+#include <windows.h>
 #endif
 #include <time.h>
 #include "base/timer.h"