diff --git a/linux-x64/clang/include/clang-c/CXString.h b/linux-x64/clang/include/clang-c/CXString.h
index 1eb3442..f117010 100644
--- a/linux-x64/clang/include/clang-c/CXString.h
+++ b/linux-x64/clang/include/clang-c/CXString.h
@@ -14,11 +14,10 @@
 #ifndef LLVM_CLANG_C_CXSTRING_H
 #define LLVM_CLANG_C_CXSTRING_H
 
+#include "clang-c/ExternC.h"
 #include "clang-c/Platform.h"
 
-#ifdef __cplusplus
-extern "C" {
-#endif
+LLVM_CLANG_C_EXTERN_C_BEGIN
 
 /**
  * \defgroup CINDEX_STRING String manipulation routines
@@ -64,8 +63,7 @@
  * @}
  */
 
-#ifdef __cplusplus
-}
-#endif
+LLVM_CLANG_C_EXTERN_C_END
+
 #endif