diff --git a/lib/Target/X86/X86InstrInfo.cpp b/lib/Target/X86/X86InstrInfo.cpp
index 7c59054a6b0..7e6a0a123e5 100644
--- a/lib/Target/X86/X86InstrInfo.cpp
+++ b/lib/Target/X86/X86InstrInfo.cpp
@@ -34,7 +34,6 @@
 #include "llvm/MC/MCAsmInfo.h"
 
 #include <limits>
-#include <cstring>
 
 using namespace llvm;