diff --git a/llvm/utils/TableGen/AsmWriterEmitter.cpp b/llvm/utils/TableGen/AsmWriterEmitter.cpp
index 821032df9570..ecd09630e1ef 100644
--- a/llvm/utils/TableGen/AsmWriterEmitter.cpp
+++ b/llvm/utils/TableGen/AsmWriterEmitter.cpp
@@ -15,6 +15,7 @@
 #include "AsmWriterEmitter.h"
 #include "CodeGenTarget.h"
 #include "Record.h"
+#include <algorithm>
 #include <ostream>
 using namespace llvm;