diff --git a/libsrc/include/nginterface_v2.hpp b/libsrc/include/nginterface_v2.hpp
index d53228bd..6ec768ab 100644
--- a/libsrc/include/nginterface_v2.hpp
+++ b/libsrc/include/nginterface_v2.hpp
@@ -12,7 +12,9 @@
   C++ interface to Netgen
 */
 
-#include "../general/archive_base.hpp"
+// #include "../general/archive_base.hpp"
+// namespace ngstd { class Archive; }
+
 
 namespace netgen
 {