diff --git a/contrib/epee/include/misc_log_ex.h b/contrib/epee/include/misc_log_ex.h
index 2ab46a2e..17641af9 100644
--- a/contrib/epee/include/misc_log_ex.h
+++ b/contrib/epee/include/misc_log_ex.h
@@ -45,6 +45,7 @@
 #include <boost/cstdint.hpp>
 #include <boost/thread.hpp>
 #include <boost/filesystem.hpp>
+#include <boost/filesystem/fstream.hpp>
 #include <boost/algorithm/string.hpp>
 #endif
 #if defined(WIN32)