diff --git a/src/core/metatypes.cpp b/src/core/metatypes.cpp
index be76e48f6..5e43cb88c 100644
--- a/src/core/metatypes.cpp
+++ b/src/core/metatypes.cpp
@@ -79,6 +79,7 @@ void RegisterMetaTypes() {
   qRegisterMetaType<QNetworkReply**>("QNetworkReply**");
   qRegisterMetaType<QItemSelection>("QItemSelection");
   qRegisterMetaTypeStreamOperators<QMap<int, Qt::Alignment>>("ColumnAlignmentMap");
+  qRegisterMetaTypeStreamOperators<QMap<int, int>>("ColumnAlignmentIntMap");
   qRegisterMetaType<Directory>("Directory");
   qRegisterMetaType<DirectoryList>("DirectoryList");
   qRegisterMetaType<Subdirectory>("Subdirectory");