diff --git a/src/core/messagesproxymodel.cpp b/src/core/messagesproxymodel.cpp
index b15d43dc0..ecf386ded 100644
--- a/src/core/messagesproxymodel.cpp
+++ b/src/core/messagesproxymodel.cpp
@@ -17,3 +17,7 @@ MessagesProxyModel::MessagesProxyModel(QObject *parent)
 MessagesProxyModel::~MessagesProxyModel() {
   qDebug("Destroying MessagesProxyModel instance.");
 }
+
+bool MessagesProxyModel::lessThan(const QModelIndex &left, const QModelIndex &right) const {
+  return QSortFilterProxyModel::lessThan(left, right);
+}
diff --git a/src/core/messagesproxymodel.h b/src/core/messagesproxymodel.h
index 8b5ea8e6a..b3ba492db 100644
--- a/src/core/messagesproxymodel.h
+++ b/src/core/messagesproxymodel.h
@@ -14,6 +14,9 @@ class MessagesProxyModel : public QSortFilterProxyModel {
     explicit MessagesProxyModel(QObject *parent = 0);
     virtual ~MessagesProxyModel();
 
+  protected:
+    bool lessThan(const QModelIndex &left, const QModelIndex &right) const;
+
   private:
     MessagesModel *m_sourceModel;
 };
diff --git a/src/gui/messagesview.cpp b/src/gui/messagesview.cpp
index fcb745171..1d2deeb62 100644
--- a/src/gui/messagesview.cpp
+++ b/src/gui/messagesview.cpp
@@ -20,4 +20,6 @@ void MessagesView::setupAppearance() {
   setDragDropMode(QAbstractItemView::NoDragDrop);
   setExpandsOnDoubleClick(false);
   setRootIsDecorated(false);
+  setItemsExpandable(false);
+  setSortingEnabled(true);
 }