diff --git a/contrib/epee/include/serialization/keyvalue_enable_POD_serialize_as_string.h b/contrib/epee/include/serialization/keyvalue_enable_POD_serialize_as_string.h
index 88ff260f..e18a3309 100644
--- a/contrib/epee/include/serialization/keyvalue_enable_POD_serialize_as_string.h
+++ b/contrib/epee/include/serialization/keyvalue_enable_POD_serialize_as_string.h
@@ -25,7 +25,7 @@
 // 
 
 #pragma once
-
+#include "serialization\keyvalue_helpers.h"
 
 
 //should be done in global namespace