diff --git a/apps/mwiniimporter/main.cpp b/apps/mwiniimporter/main.cpp
index c2408a554..c10103cd6 100644
--- a/apps/mwiniimporter/main.cpp
+++ b/apps/mwiniimporter/main.cpp
@@ -1,6 +1,7 @@
 #include "importer.hpp"
 
 #include <string>
+#include <iostream>
 
 #include <boost/program_options.hpp>
 #include <boost/filesystem.hpp>