diff --git a/lib/Support/Timer.cpp b/lib/Support/Timer.cpp
index 01ab03dd2bf..1b2f91d03b4 100644
--- a/lib/Support/Timer.cpp
+++ b/lib/Support/Timer.cpp
@@ -14,7 +14,9 @@
 #include "llvm/Support/Timer.h"
 #include "llvm/Support/CommandLine.h"
 #include "llvm/System/Process.h"
+#include <algorithm>
 #include <fstream>
+#include <functional>
 #include <iostream>
 #include <map>