diff --git a/src/libdanbooru/danboorupost.h b/src/libdanbooru/danboorupost.h
index d36e4c1..f6e63a4 100644
--- a/src/libdanbooru/danboorupost.h
+++ b/src/libdanbooru/danboorupost.h
@@ -223,6 +223,7 @@ Q_DECLARE_OPERATORS_FOR_FLAGS(DanbooruPost::Ratings)
 
 Q_DECLARE_METATYPE(Danbooru::DanbooruPost *)
 Q_DECLARE_METATYPE(Danbooru::DanbooruPost::Rating)
+Q_DECLARE_METATYPE(QSet<QString>)
 
 
 #endif // DANBOORUPOST_H