diff --git a/plugins/quickopen/quickopenmodel.h b/plugins/quickopen/quickopenmodel.h
index 38ab90cc82..fa236fe1ce 100644
--- a/plugins/quickopen/quickopenmodel.h
+++ b/plugins/quickopen/quickopenmodel.h
@@ -1,133 +1,133 @@
 /* This file is part of the KDE libraries
    Copyright (C) 2007 David Nolden <david.nolden.kdevelop@art-master.de>
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License version 2 as published by the Free Software Foundation.
 
    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.
  */
 
 #ifndef KDEVPLATFORM_PLUGIN_QUICKOPENMODEL_H
 #define KDEVPLATFORM_PLUGIN_QUICKOPENMODEL_H
 
 #include <QMultiMap>
 #include <QString>
 #include <QSet>
 
 #include <serialization/indexedstring.h>
 
 #include <language/interfaces/quickopendataprovider.h>
 #include "expandingtree/expandingwidgetmodel.h"
-
+class QTimer;
 class QuickOpenModel
     : public ExpandingWidgetModel
 {
     Q_OBJECT
 public:
     explicit QuickOpenModel(QWidget* parent);
 
     void registerProvider(const QStringList& scopes, const QStringList& type, KDevelop::QuickOpenDataProviderBase* provider);
 
     /**
      * Remove provider.
      * @param provider The provider to remove
      * @return Whether a provider was removed. If false, the provider was not attached.
      * */
     bool removeProvider(KDevelop::QuickOpenDataProviderBase* provider);
 
     ///Returns a list of all scopes that a registered through some providers
     QStringList allScopes() const;
     ///Returns a list of all types that a registered through some providers
     QStringList allTypes() const;
 
     /**
      * @param items The list of items that should be used.
      * @param scopes The list of scopes that should be used.
 
      * When this is called, the state is restart()ed.
      * */
     void enableProviders(const QStringList& items, const QStringList& scopes);
 
     ///Reset all providers, unexpand everything, empty caches.
     void restart(bool keepFilterText = false);
 
     QModelIndex index(int, int, const QModelIndex& parent) const override;
     QModelIndex parent(const QModelIndex&) const override;
     int rowCount(const QModelIndex&) const override;
     int unfilteredRowCount() const;
     int columnCount() const;
     int columnCount(const QModelIndex&) const override;
     QVariant data(const QModelIndex&, int) const override;
 
     /**
      * Tries to execute the item currently selected.
      * Returns true if the quickopen-dialog should be closed.
      * @param filterText Should be the current content of the filter line-edit.
      *
      * If this returns false, and filterText was changed, the change must be put
      * into the line-edit. That way items may execute by changing the content
      * of the line-edit.
      * */
     bool execute(const QModelIndex& index, QString& filterText);
 
     //The expandingwidgetmodel needs access to the tree-view
     void setTreeView(QTreeView* view);
 
     QTreeView* treeView() const override;
 
     virtual QSet<KDevelop::IndexedString> fileSet() const;
 
     ///This value will be added to the height of all created expanding-widgets
     void setExpandingWidgetHeightIncrease(int pixels);
 public Q_SLOTS:
     void textChanged(const QString& str);
 private Q_SLOTS:
     void destroyed(QObject* obj);
     void resetTimer();
     void restart_internal(bool keepFilterText);
 private:
     bool indexIsItem(const QModelIndex& index) const override;
 
     int contextMatchQuality(const QModelIndex& index) const override;
 
     KDevelop::QuickOpenDataPointer getItem(int row, bool noReset = false) const;
 
     using DataList = QHash<int, KDevelop::QuickOpenDataPointer>;
     mutable DataList m_cachedData;
 
     QTreeView* m_treeView;
     QTimer* m_resetTimer;
 
     struct ProviderEntry
     {
         ProviderEntry()
         {
         }
         bool enabled = false;
         QSet<QString> scopes;
         QSet<QString> types;
         KDevelop::QuickOpenDataProviderBase* provider;
     };
 
     //using ProviderMap = QMultiMap<QString, ProviderEntry>;
     using ProviderList = QVector<ProviderEntry>;
     ProviderList m_providers;
     QString m_filterText;
     int m_expandingWidgetHeightIncrease;
     mutable int m_resetBehindRow;
 
     QSet<QString> m_enabledItems;
     QSet<QString> m_enabledScopes;
 };
 
 #endif