diff --git a/kcmkwin/kwindecoration/configdialog.cpp b/kcmkwin/kwindecoration/configdialog.cpp
index a839867892..15bd7875e7 100644
--- a/kcmkwin/kwindecoration/configdialog.cpp
+++ b/kcmkwin/kwindecoration/configdialog.cpp
@@ -152,7 +152,7 @@ void KWinDecorationConfigDialog::slotSelectionChanged()
 
 QString KWinDecorationConfigDialog::styleToConfigLib( const QString& styleLib ) const
     {
-    if( styleLib.startsWith( "kwin3_" ))
+    if( styleLib.startsWith( QLatin1String( "kwin3_" )))
         return "kwin_" + styleLib.mid( 6 ) + "_config";
     else
         return styleLib + "_config";
diff --git a/kcmkwin/kwindecoration/decorationmodel.cpp b/kcmkwin/kwindecoration/decorationmodel.cpp
index ad4ee096e6..559f0dfde5 100644
--- a/kcmkwin/kwindecoration/decorationmodel.cpp
+++ b/kcmkwin/kwindecoration/decorationmodel.cpp
@@ -90,7 +90,7 @@ void DecorationModel::findDecorations()
                     const KDesktopFile desktopFile( filename );
                     const QString libName = desktopFile.desktopGroup().readEntry( "X-KDE-Library" );
 
-                    if( !libName.isEmpty() && libName.startsWith( "kwin3_" ) )
+                    if( !libName.isEmpty() && libName.startsWith( QLatin1String( "kwin3_" ) ) )
                         {
                         if( libName == "kwin3_aurorae" )
                             {