diff --git a/konversation/src/autoreplace_preferences.cpp b/konversation/src/autoreplace_preferences.cpp
index b66eb25..b96bf67 100644
--- a/konversation/src/autoreplace_preferences.cpp
+++ b/konversation/src/autoreplace_preferences.cpp
@@ -385,7 +385,7 @@ void Autoreplace_Config::showRegExpEditor()
     {
         // tdeutils was installed, so the dialog was found.  Fetch the editor interface.
         KRegExpEditorInterface *reEditor =
-                static_cast<KRegExpEditorInterface *>(editorDialog->qt_cast( "KRegExpEditorInterface" ) );
+                static_cast<KRegExpEditorInterface *>(editorDialog->tqt_cast( "KRegExpEditorInterface" ) );
         Q_ASSERT(reEditor); // This should not fail!
         reEditor->setRegExp(patternInput->text());
         int dlgResult = editorDialog->exec();
diff --git a/konversation/src/highlight_preferences.cpp b/konversation/src/highlight_preferences.cpp
index c59a545..b87adbe 100644
--- a/konversation/src/highlight_preferences.cpp
+++ b/konversation/src/highlight_preferences.cpp
@@ -206,7 +206,7 @@ void Highlight_Config::highlightTextEditButtonClicked()
   {
         // tdeutils was installed, so the dialog was found.  Fetch the editor interface.
     KRegExpEditorInterface *reEditor =
-        static_cast<KRegExpEditorInterface *>(editorDialog->qt_cast( "KRegExpEditorInterface" ) );
+        static_cast<KRegExpEditorInterface *>(editorDialog->tqt_cast( "KRegExpEditorInterface" ) );
     Q_ASSERT( reEditor ); // This should not fail!// now use the editor.
     reEditor->setRegExp(patternInput->text());
     int dlgResult = editorDialog->exec();