diff --git a/lib/Analysis/ConstantFolding.cpp b/lib/Analysis/ConstantFolding.cpp
index c015231e1ba..96656a3c73f 100644
--- a/lib/Analysis/ConstantFolding.cpp
+++ b/lib/Analysis/ConstantFolding.cpp
@@ -33,7 +33,6 @@
 #include "llvm/System/FEnv.h"
 #include <cerrno>
 #include <cmath>
-#include <fenv.h>
 using namespace llvm;
 
 //===----------------------------------------------------------------------===//