diff --git a/llvm/lib/Support/Path.cpp b/llvm/lib/Support/Path.cpp
index 3e0ee8d..4689208 100644
--- a/llvm/lib/Support/Path.cpp
+++ b/llvm/lib/Support/Path.cpp
@@ -13,6 +13,7 @@
 
 #include "llvm/Support/Path.h"
 #include "llvm/Config/config.h"
+#include "llvm/Support/FileSystem.h"
 #include <cassert>
 #include <cstring>
 #include <ostream>