diff --git a/classic/CategoryList.cpp b/classic/CategoryList.cpp
--- a/classic/CategoryList.cpp
+++ b/classic/CategoryList.cpp
@@ -82,7 +82,6 @@
 {
     QString content;
     QString moduleName;
-    KIconLoader * iconL = KIconLoader::global();
     d->itemMap.clear();
 
     const QString templatePath = QStandardPaths::locate(QStandardPaths::GenericDataLocation, QStringLiteral("systemsettings/classic/main.html") );
diff --git a/classic/ClassicMode.cpp b/classic/ClassicMode.cpp
--- a/classic/ClassicMode.cpp
+++ b/classic/ClassicMode.cpp
@@ -71,7 +71,6 @@
                                      i18n("(c) 2009, Ben Cooksley"));
     d->aboutClassic->addAuthor(i18n("Ben Cooksley"), i18n("Author"), QStringLiteral("bcooksley@kde.org"));
     d->aboutClassic->addAuthor(i18n("Mathias Soeken"), i18n("Developer"), QStringLiteral("msoeken@informatik.uni-bremen.de"));
-    d->aboutClassic->setProgramIconName(QStringLiteral("view-list-tree"));
 }
 
 ClassicMode::~ClassicMode()
@@ -250,7 +249,7 @@
 {
     QWidget * configWidget = new QWidget( config );
     d->classicConfig.setupUi( configWidget );
-    config->addPage( configWidget, i18n("Tree View"), aboutData()->programIconName() );
+    config->addPage( configWidget, i18n("Tree View"), QStringLiteral("view-list-tree") );
 }
 
 void ClassicMode::loadConfiguration()
diff --git a/core/ModuleView.cpp b/core/ModuleView.cpp
--- a/core/ModuleView.cpp
+++ b/core/ModuleView.cpp
@@ -129,11 +129,7 @@
     if( activeModule ) {
         aboutData = const_cast<KAboutData*>( activeModule->aboutData() );
     }
-    if ( aboutData ) {
-        aboutData->setProgramIconName( activeModule->moduleInfo().service()->icon() );
-        return aboutData;
-    }
-    return nullptr;
+    return aboutData;
 }
 
 void ModuleView::loadModule( const QModelIndex &menuItem )
diff --git a/icons/IconMode.cpp b/icons/IconMode.cpp
--- a/icons/IconMode.cpp
+++ b/icons/IconMode.cpp
@@ -61,7 +61,6 @@
                                  KAboutLicense::GPL, i18n( "(c) 2009, Ben Cooksley" ) );
     d->aboutIcon->addAuthor( i18n( "Ben Cooksley" ), i18n( "Author" ), QStringLiteral("bcooksley@kde.org") );
     d->aboutIcon->addAuthor( i18n( "Mathias Soeken" ), i18n( "Developer" ), QStringLiteral("msoeken@informatik.uni-bremen.de") );
-    d->aboutIcon->setProgramIconName( QStringLiteral("view-list-icons") );
 
     d->backAction = KStandardAction::back( this, SLOT(backToOverview()), this );
     d->backAction->setText( i18n( "All Settings" ) );
diff --git a/sidebar/SidebarDelegate.cpp b/sidebar/SidebarDelegate.cpp
--- a/sidebar/SidebarDelegate.cpp
+++ b/sidebar/SidebarDelegate.cpp
@@ -36,6 +36,7 @@
 
 QSize SidebarDelegate::sizeHint(const QStyleOptionViewItem &option, const QModelIndex &index) const
 {
+    Q_UNUSED(index)
     return QSize(option.decorationSize.width() + s_margin * 2, option.decorationSize.height() + s_margin * 2);
 }
 
diff --git a/sidebar/SidebarMode.cpp b/sidebar/SidebarMode.cpp
--- a/sidebar/SidebarMode.cpp
+++ b/sidebar/SidebarMode.cpp
@@ -265,7 +265,6 @@
     d->aboutIcon->addAuthor( i18n( "Marco Martin" ), i18n( "Author" ), QStringLiteral("mart@kde.org") );
     d->aboutIcon->addAuthor( i18n( "Ben Cooksley" ), i18n( "Author" ), QStringLiteral("bcooksley@kde.org") );
     d->aboutIcon->addAuthor( i18n( "Mathias Soeken" ), i18n( "Developer" ), QStringLiteral("msoeken@informatik.uni-bremen.de") );
-    d->aboutIcon->setProgramIconName( QStringLiteral("view-sidetree") );
 
     qmlRegisterType<QAction>();
 }