diff --git a/rpcs3/Loader/PUP.h b/rpcs3/Loader/PUP.h
index ec2775e0e8..286375039c 100644
--- a/rpcs3/Loader/PUP.h
+++ b/rpcs3/Loader/PUP.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include "util/types.hpp"
+#include "util/endian.hpp"
 #include "../../Utilities/File.h"
 
 #include <vector>