diff --git a/lib/CodeGen/CGExpr.cpp b/lib/CodeGen/CGExpr.cpp
index a35b652f56cc4b415da47d44cd47469eb9f24877..c08735d1afa2ee907796571541e6e23b2f10ae93 100644
--- a/lib/CodeGen/CGExpr.cpp
+++ b/lib/CodeGen/CGExpr.cpp
@@ -37,6 +37,8 @@
 #include "llvm/Support/Path.h"
 #include "llvm/Transforms/Utils/SanitizerStats.h"
 
+#include <string>
+
 using namespace clang;
 using namespace CodeGen;