diff --git a/lib/VMCore/TypeSymbolTable.cpp b/lib/VMCore/TypeSymbolTable.cpp
index 9a572238cc7..b608c18ae5e 100644
--- a/lib/VMCore/TypeSymbolTable.cpp
+++ b/lib/VMCore/TypeSymbolTable.cpp
@@ -15,6 +15,7 @@
 #include "llvm/DerivedTypes.h"
 #include "llvm/ADT/StringExtras.h"
 #include <iostream>
+#include <algorithm>
 
 using namespace llvm;