diff --git a/clients/oxygen/config/oxygenconfig.cpp b/clients/oxygen/config/oxygenconfig.cpp
index bedd5086f4..063c447028 100644
--- a/clients/oxygen/config/oxygenconfig.cpp
+++ b/clients/oxygen/config/oxygenconfig.cpp
@@ -68,7 +68,7 @@ namespace Oxygen
 
         _configWidget = new ConfigWidget( parent );
 
-        load( KConfigGroup() );
+        load();
         connect( _configWidget, SIGNAL( changed( bool ) ), SLOT(updateChanged()) );
         _configWidget->show();
 
@@ -83,7 +83,7 @@ namespace Oxygen
     { _configWidget->toggleExpertMode( value ); }
 
     //_______________________________________________________________________
-    void Config::load( const KConfigGroup& )
+    void Config::load( void )
     {
 
         // load standard configuration
@@ -121,7 +121,7 @@ namespace Oxygen
     }
 
     //_______________________________________________________________________
-    void Config::save( KConfigGroup& )
+    void Config::save( void )
     {
 
         // create configuration from group
@@ -152,7 +152,7 @@ namespace Oxygen
     }
 
     //_______________________________________________________________________
-    void Config::defaults()
+    void Config::defaults( void )
     {
 
         // install default configuration
diff --git a/clients/oxygen/config/oxygenconfig.h b/clients/oxygen/config/oxygenconfig.h
index 8df3be3264..8d24aaf3a1 100644
--- a/clients/oxygen/config/oxygenconfig.h
+++ b/clients/oxygen/config/oxygenconfig.h
@@ -66,10 +66,20 @@ namespace Oxygen {
         public slots:
 
         //! load configuration
-        void load( const KConfigGroup& );
+        /*! although kconfiggroup argument is not used. It is required by KWin API */
+        void load( const KConfigGroup& )
+        { load(); }
 
         //! save configuration
-        void save( KConfigGroup& );
+        /*! although kconfiggroup argument is not used. It is required by KWin API */
+        void save( KConfigGroup& )
+        { save(); }
+
+        //! load configuration
+        void load( void );
+
+        //! save configuration
+        void save( void );
 
         //! restore defaults
         void defaults( void );