diff --git a/src/akonadi-contacts/collectionfiltermodel.cpp b/src/akonadi-contacts/collectionfiltermodel.cpp
index aa3e3e9b..74d7906c 100644
--- a/src/akonadi-contacts/collectionfiltermodel.cpp
+++ b/src/akonadi-contacts/collectionfiltermodel.cpp
@@ -1,66 +1,71 @@
 /*
     This file is part of Akonadi Contact.
 
     Copyright (c) 2009 Tobias Koenig <tokoe@kde.org>
 
     This library is free software; you can redistribute it and/or modify it
     under the terms of the GNU Library General Public License as published by
     the Free Software Foundation; either version 2 of the License, or (at your
     option) any later version.
 
     This library is distributed in the hope that it will be useful, but WITHOUT
     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
     License for more details.
 
     You should have received a copy of the GNU Library General Public License
     along with this library; see the file COPYING.LIB.  If not, write to the
     Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
     02110-1301, USA.
 */
 
 #include "collectionfiltermodel_p.h"
 
 #include <entitytreemodel.h>
 
 CollectionFilterModel::CollectionFilterModel(QObject *parent)
     : QSortFilterProxyModel(parent)
     , mRights(Akonadi::Collection::ReadOnly)
 {
 }
 
 void CollectionFilterModel::addContentMimeTypeFilter(const QString &mimeType)
 {
     mContentMimeTypes.insert(mimeType);
     invalidateFilter();
 }
 
 void CollectionFilterModel::setRightsFilter(Akonadi::Collection::Rights rights)
 {
     mRights = rights;
     invalidateFilter();
 }
 
 bool CollectionFilterModel::filterAcceptsRow(int row, const QModelIndex &parent) const
 {
     bool accepted = true;
 
     const QModelIndex index = sourceModel()->index(row, 0, parent);
     const Akonadi::Collection collection = index.data(Akonadi::EntityTreeModel::CollectionRole).value<Akonadi::Collection>();
     if (!collection.isValid()) {
         return false;
     }
 
     if (!mContentMimeTypes.isEmpty()) {
-        QSet<QString> contentMimeTypes = collection.contentMimeTypes().toSet();
+#if QT_VERSION < QT_VERSION_CHECK(5, 14, 0)
+        const QSet<QString> contentMimeTypes = collection.contentMimeTypes().toSet();
+#else
+        const auto collectionMimeTypesSet  = collection.contentMimeTypes();
+        const QSet<QString> contentMimeTypes = QSet<QString>(collectionMimeTypesSet.begin(), collectionMimeTypesSet.end());
+#endif
         accepted = accepted && contentMimeTypes.intersects(mContentMimeTypes);
     }
 
     if (mRights != Akonadi::Collection::ReadOnly) {
         accepted = accepted && (collection.rights() & mRights);
     }
 
     return accepted;
 }
 
 #include "moc_collectionfiltermodel_p.cpp"