diff --git a/src/mainwindow.cpp b/src/mainwindow.cpp
index d9f35ff..f3adb96 100644
--- a/src/mainwindow.cpp
+++ b/src/mainwindow.cpp
@@ -353,7 +353,7 @@ int MainWindow::getParenthesesLevel(const TQString &str)
 void MainWindow::loadConfig()
 {
     {
-        KConfigGroup config(TDEGlobal::config(), "Settings");
+        TDEConfigGroup config(TDEGlobal::config(), "Settings");
 
         TQString mode = config.readEntry("Trigonometric mode", "Degrees");
         if(mode == "Degrees") {
@@ -377,7 +377,7 @@ void MainWindow::loadConfig()
     }
 
     {
-        KConfigGroup config(TDEGlobal::config(), "Variables");
+        TDEConfigGroup config(TDEGlobal::config(), "Variables");
 
         TQStringList list = config.readListEntry("Saved Variables");
         for(TQStringList::ConstIterator it = list.begin(); it != list.end(); ++it) {
@@ -392,7 +392,7 @@ void MainWindow::loadConfig()
     }
 
     {
-        KConfigGroup config(TDEGlobal::config(), "GUI");
+        TDEConfigGroup config(TDEGlobal::config(), "GUI");
 
         bool showHistory = config.readBoolEntry("ShowHistory", true);
         action<KToggleAction>("toggleHistoryList")->setChecked(showHistory);
@@ -415,7 +415,7 @@ void MainWindow::loadConfig()
     }
 
     {
-        KConfigGroup config(TDEGlobal::config(), "Functions");
+        TDEConfigGroup config(TDEGlobal::config(), "Functions");
 
         TQStringList fnList = config.readListEntry("FunctionList");
         for(TQStringList::ConstIterator it = fnList.begin(); it != fnList.end(); ++it)
@@ -428,7 +428,7 @@ void MainWindow::loadConfig()
 void MainWindow::saveConfig()
 {
     {
-        KConfigGroup config(TDEGlobal::config(), "Settings");
+        TDEConfigGroup config(TDEGlobal::config(), "Settings");
 
         config.writeEntry("Trigonometric mode",
              trigMode() == Abakus::Degrees
@@ -440,7 +440,7 @@ void MainWindow::saveConfig()
     }
 
     {
-        KConfigGroup config(TDEGlobal::config(), "Variables");
+        TDEConfigGroup config(TDEGlobal::config(), "Variables");
 
         TQStringList list;
         TQStringList values = ValueManager::instance()->valueNames();
@@ -462,7 +462,7 @@ void MainWindow::saveConfig()
     }
 
     {
-        KConfigGroup config(TDEGlobal::config(), "GUI");
+        TDEConfigGroup config(TDEGlobal::config(), "GUI");
         bool inCompactMode = action<KToggleAction>("toggleCompactMode")->isChecked();
 
         config.writeEntry("InCompactMode", inCompactMode);
@@ -480,7 +480,7 @@ void MainWindow::saveConfig()
     }
 
     {
-        KConfigGroup config(TDEGlobal::config(), "Functions");
+        TDEConfigGroup config(TDEGlobal::config(), "Functions");
 
         FunctionManager *manager = FunctionManager::instance();