diff --git a/files.cpp b/files.cpp
index 252eee00..5bedaebd 100644
--- a/files.cpp
+++ b/files.cpp
@@ -5,10 +5,9 @@
 #ifndef CRYPTOPP_IMPORTS
 
 #include "files.h"
+#include "stdcpp.h"
 #include "trap.h"
 
-#include <limits>
-
 NAMESPACE_BEGIN(CryptoPP)
 
 using namespace std;