diff --git a/test/main.h b/test/main.h
index 8bf603081..8c7ea59a6 100644
--- a/test/main.h
+++ b/test/main.h
@@ -27,6 +27,7 @@
 #include <cerrno>
 #include <ctime>
 #include <iostream>
+#include <fstream>
 #include <string>
 #include <vector>
 #include <typeinfo>