diff --git a/src/core/frontend/applets/mii_selector.h b/src/core/frontend/applets/mii_selector.h
index ae63e359a..53578282b 100644
--- a/src/core/frontend/applets/mii_selector.h
+++ b/src/core/frontend/applets/mii_selector.h
@@ -6,6 +6,7 @@
 
 #include <memory>
 #include <string>
+#include <boost/serialization/version.hpp>
 #include "core/hle/applets/mii_selector.h"
 
 namespace Frontend {