diff --git a/archivefolderdialog.cpp b/archivefolderdialog.cpp
index c3e372a47..b7a292455 100644
--- a/archivefolderdialog.cpp
+++ b/archivefolderdialog.cpp
@@ -94,6 +94,7 @@ ArchiveFolderDialog::ArchiveFolderDialog( QWidget *parent )
   mUrlRequester->setMode( KFile::LocalOnly | KFile::File );
   mUrlRequester->setFilter( "*.tar *.zip *.tar.gz *.tar.bz2" );
   fileNameLabel->setBuddy( mUrlRequester );
+  connect( mUrlRequester->lineEdit(), SIGNAL(textChanged(const QString &)), SLOT( slotUrlChanged(const QString&)));
   connect( mUrlRequester, SIGNAL(urlSelected(const KUrl&)),
            this, SLOT(slotFixFileExtension()) );
   mainLayout->addWidget( mUrlRequester, row, 1 );
@@ -115,6 +116,11 @@ ArchiveFolderDialog::ArchiveFolderDialog( QWidget *parent )
   resize( 500, minimumSize().height() );
 }
 
+void ArchiveFolderDialog::slotUrlChanged( const QString & text)
+{
+  enableButtonOk( !text.isEmpty() );
+}
+
 void ArchiveFolderDialog::slotFolderChanged( KMFolder *folder )
 {
   mDeleteCheckBox->setEnabled( folder->canDeleteMessages() );
diff --git a/archivefolderdialog.h b/archivefolderdialog.h
index c38a4c929..0862c600f 100644
--- a/archivefolderdialog.h
+++ b/archivefolderdialog.h
@@ -43,6 +43,7 @@ class ArchiveFolderDialog : public KDialog
 
     void slotFixFileExtension();
     void slotFolderChanged( KMFolder * );
+    void slotUrlChanged( const QString& );
     /** reimp */
     virtual void slotButtonClicked( int button );