diff --git a/kwin/clients/oxygen/config/oxygenconfig.cpp b/kwin/clients/oxygen/config/oxygenconfig.cpp
index b269c31f..dd08f05a 100644
--- a/kwin/clients/oxygen/config/oxygenconfig.cpp
+++ b/kwin/clients/oxygen/config/oxygenconfig.cpp
@@ -47,15 +47,15 @@
 //_______________________________________________________________________
 extern "C"
 {
-    KDE_EXPORT QObject* allocate_config( KConfig* conf, QWidget* parent )
-    { return ( new Oxygen::Config( conf, parent ) ); }
+    KDE_EXPORT QObject* allocate_config( QWidget* parent )
+    { return ( new Oxygen::Config( parent ) ); }
 }
 
 namespace Oxygen
 {
 
     //_______________________________________________________________________
-    Config::Config( KConfig*, QWidget* parent ):
+    Config::Config( QWidget* parent ):
         QObject( parent )
     {
 
diff --git a/kwin/clients/oxygen/config/oxygenconfig.h b/kwin/clients/oxygen/config/oxygenconfig.h
index 9a830540..f42ad919 100644
--- a/kwin/clients/oxygen/config/oxygenconfig.h
+++ b/kwin/clients/oxygen/config/oxygenconfig.h
@@ -50,7 +50,7 @@ namespace Oxygen {
         public:
 
         //! constructor
-        Config( KConfig* conf, QWidget* parent );
+        Config( QWidget* parent );
 
         //! destructor
         ~Config();
@@ -65,16 +65,6 @@ namespace Oxygen {
 
         public slots:
 
-        //! load configuration
-        /*! although kconfiggroup argument is not used. It is required by KWin API */
-        void load( const KConfigGroup& )
-        { load(); }
-
-        //! save configuration
-        /*! although kconfiggroup argument is not used. It is required by KWin API */
-        void save( KConfigGroup& )
-        { save(); }
-
         //! load configuration
         void load( void );
 
diff --git a/kwin/clients/oxygen/oxygenfactory.cpp b/kwin/clients/oxygen/oxygenfactory.cpp
index 46c63af4..7376c19c 100644
--- a/kwin/clients/oxygen/oxygenfactory.cpp
+++ b/kwin/clients/oxygen/oxygenfactory.cpp
@@ -30,7 +30,6 @@
 #include "oxygenexceptionlist.h"
 
 #include <KSharedConfig>
-#include <KConfigGroup>
 #include <KDebug>
 #include <KGlobal>
 #include <KWindowInfo>
diff --git a/kwin/kcmkwin/kwindecoration/kwindecoration.cpp b/kwin/kcmkwin/kwindecoration/kwindecoration.cpp
index 0e6138d0..46fd6387 100644
--- a/kwin/kcmkwin/kwindecoration/kwindecoration.cpp
+++ b/kwin/kcmkwin/kwindecoration/kwindecoration.cpp
@@ -38,6 +38,7 @@
 #include <KConfigGroup>
 #include <KVBox>
 #include <KLocale>
+#include <KDebug>
 
 static QString styleToConfigLib(KConfigGroup &conf)
 {
@@ -97,13 +98,12 @@ void KWinDecorationModule::load()
     if (library.load()) {
         void *alloc_ptr = library.resolve("allocate_config");
         if (alloc_ptr != nullptr) {
-            allocatePlugin = (QObject * (*)(KConfigGroup & conf, QWidget * parent))alloc_ptr;
+            allocatePlugin = (QObject * (*)(QWidget * parent))alloc_ptr;
             m_pluginConfigWidget = new KVBox(this);
-            m_pluginObject = (QObject*)(allocatePlugin(config, m_pluginConfigWidget));
+            m_pluginObject = (QObject*)(allocatePlugin(m_pluginConfigWidget));
 
             // connect required signals and slots together...
             connect(m_pluginObject, SIGNAL(changed()), this, SLOT(slotSelectionChanged()));
-            connect(this, SIGNAL(pluginSave(KConfigGroup&)), m_pluginObject, SLOT(save(KConfigGroup&)));
         }
     }
 
@@ -114,9 +114,10 @@ void KWinDecorationModule::load()
 
 void KWinDecorationModule::save()
 {
-    KConfigGroup config(m_kwinConfig, "Style");
-    emit pluginSave(config);
-    config.sync();
+    const bool saved = QMetaObject::invokeMethod(m_pluginObject, "save");
+    if (!saved) {
+        kWarning() << "Could not save decoration settings";
+    }
 
     // We saved, so tell kcmodule that there have been  no new user changes made.
     emit KCModule::changed(false);
diff --git a/kwin/kcmkwin/kwindecoration/kwindecoration.h b/kwin/kcmkwin/kwindecoration/kwindecoration.h
index 05c60235..74459081 100644
--- a/kwin/kcmkwin/kwindecoration/kwindecoration.h
+++ b/kwin/kcmkwin/kwindecoration/kwindecoration.h
@@ -52,16 +52,13 @@ public:
     virtual void save();
     virtual void defaults();
 
-Q_SIGNALS:
-    void pluginSave(KConfigGroup &conf);
-
 private slots:
     void slotSelectionChanged();
 
 private:
     KSharedConfigPtr m_kwinConfig;
     QVBoxLayout* m_layout;
-    QObject* (*allocatePlugin)(KConfigGroup& conf, QWidget* parent);
+    QObject* (*allocatePlugin)(QWidget* parent);
     QObject* m_pluginObject;
     QWidget* m_pluginConfigWidget;
 };