diff --git a/llvm/lib/Support/Path.cpp b/llvm/lib/Support/Path.cpp
index c2b3f18..1872af5 100644
--- a/llvm/lib/Support/Path.cpp
+++ b/llvm/lib/Support/Path.cpp
@@ -15,6 +15,7 @@
 #include "llvm/Support/Endian.h"
 #include "llvm/Support/ErrorHandling.h"
 #include "llvm/Support/FileSystem.h"
+#include "llvm/Support/Process.h"
 #include <cctype>
 #include <cstdio>
 #include <cstring>