diff --git a/payload_generator/payload_file.cc b/payload_generator/payload_file.cc
index 66f51dd..6185f6c 100644
--- a/payload_generator/payload_file.cc
+++ b/payload_generator/payload_file.cc
@@ -16,6 +16,8 @@
 
 #include "update_engine/payload_generator/payload_file.h"
 
+#include <endian.h>
+
 #include <algorithm>
 
 #include "update_engine/delta_performer.h"
diff --git a/payload_generator/payload_signer.cc b/payload_generator/payload_signer.cc
index 5b7d677..218b432 100644
--- a/payload_generator/payload_signer.cc
+++ b/payload_generator/payload_signer.cc
@@ -16,6 +16,8 @@
 
 #include "update_engine/payload_generator/payload_signer.h"
 
+#include <endian.h>
+
 #include <base/logging.h>
 #include <base/strings/string_split.h>
 #include <base/strings/string_util.h>