diff --git a/hgext/extlib/cfastmanifest/tree_convert.c b/hgext/extlib/cfastmanifest/tree_convert.c
index 431befeb0e..8c364c16a7 100644
--- a/hgext/extlib/cfastmanifest/tree_convert.c
+++ b/hgext/extlib/cfastmanifest/tree_convert.c
@@ -11,6 +11,7 @@
 #include "lib/clib/buffer.h"
 #include "lib/clib/convert.h"
 #include "lib/clib/portability/portability.h"
+#include "mercurial/compat.h"
 #include "path_buffer.h"
 #include "tree_arena.h"
 
diff --git a/hgext/extlib/cfastmanifest/tree_disk.c b/hgext/extlib/cfastmanifest/tree_disk.c
index db875ad51c..3dc3cf02e6 100644
--- a/hgext/extlib/cfastmanifest/tree_disk.c
+++ b/hgext/extlib/cfastmanifest/tree_disk.c
@@ -8,10 +8,10 @@
 #include <memory.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <arpa/inet.h>
 
 #include "checksum.h"
 #include "hgext/extlib/cfastmanifest/tree.h"
+#include "lib/clib/portability/inet.h"
 #include "node.h"
 #include "tree_arena.h"