diff --git a/kdevplatform/shell/settings/sourceformattersettings.cpp b/kdevplatform/shell/settings/sourceformattersettings.cpp
index 4e55e5effb..3c11bdcb4e 100644
--- a/kdevplatform/shell/settings/sourceformattersettings.cpp
+++ b/kdevplatform/shell/settings/sourceformattersettings.cpp
@@ -1,92 +1,94 @@
 /* This file is part of KDevelop
 *  Copyright (C) 2008 Cédric Pasteur <cedric.pasteur@free.fr>
 
 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public
 License as published by the Free Software Foundation; either
 version 2 of the License, or (at your option) any later version.
 
 This program 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
 General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program; see the file COPYING.  If not, write to
 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 Boston, MA 02110-1301, USA.
 
 */
 #include "sourceformattersettings.h"
 
 #include <KLocalizedString>
 #include <KConfigGroup>
 
 #include <shell/core.h>
 #include <shell/sourceformattercontroller.h>
 
 #include "debug.h"
 
-using KDevelop::Core;
-using KDevelop::SourceFormatterController;
+using namespace KDevelop;
 
 SourceFormatterSettings::SourceFormatterSettings(QWidget* parent)
     : KDevelop::ConfigPage(nullptr, nullptr, parent)
 {
     setupUi(this);
+
+    connect(formatterSelectionEdit, &SourceFormatterSelectionEdit::changed,
+            this, &SourceFormatterSettings::changed);
 }
 
 SourceFormatterSettings::~SourceFormatterSettings()
 {
 }
 
 void SourceFormatterSettings::reset()
 {
     KConfigGroup sessionConfig = Core::self()->sourceFormatterControllerInternal()->sessionConfig();
 
     bool b = blockSignals( true );
     chkKateModelines->blockSignals( !b );
     chkKateOverrideIndentation->blockSignals( !b );
     chkKateModelines->setChecked(sessionConfig.readEntry(SourceFormatterController::kateModeLineConfigKey(), false));
     chkKateOverrideIndentation->setChecked(sessionConfig.readEntry(SourceFormatterController::kateOverrideIndentationConfigKey(), false));
     blockSignals( b );
     chkKateModelines->blockSignals( b );
     chkKateOverrideIndentation->blockSignals( b );
 
     formatterSelectionEdit->loadSettings(sessionConfig);
 }
 
 void SourceFormatterSettings::apply()
 {
     KConfigGroup sessionConfig = Core::self()->sourceFormatterControllerInternal()->sessionConfig();
 
     sessionConfig.writeEntry( SourceFormatterController::kateModeLineConfigKey(), chkKateModelines->isChecked() );
     sessionConfig.writeEntry( SourceFormatterController::kateOverrideIndentationConfigKey(), chkKateOverrideIndentation->isChecked() );
 
     formatterSelectionEdit->saveSettings(sessionConfig);
 
     sessionConfig.sync();
 
     Core::self()->sourceFormatterControllerInternal()->settingsChanged();
 }
 
 void SourceFormatterSettings::defaults()
 {
     // do nothing
 }
 
 
 QString SourceFormatterSettings::name() const
 {
     return i18n("Source Formatter");
 }
 
 QString SourceFormatterSettings::fullName() const
 {
     return i18n("Configure Source Formatter");
 }
 
 QIcon SourceFormatterSettings::icon() const
 {
     return QIcon::fromTheme(QStringLiteral("text-field"));
 }