diff --git a/Modules/Visualization/Monteverdi/include/mvdMainWindow.h b/Modules/Visualization/Monteverdi/include/mvdMainWindow.h
index f19513a1cde73f7ae05ff8db69cab7fa147d28a0..a49c11fe01b223541bf61c718af08f2db7605715 100644
--- a/Modules/Visualization/Monteverdi/include/mvdMainWindow.h
+++ b/Modules/Visualization/Monteverdi/include/mvdMainWindow.h
@@ -150,7 +150,7 @@ public slots:
 
   /**
    */
-  void ImportImages( const QStringList & filenames, bool enableOverviews );
+  void ImportImages( const QStringList & filenames, bool enableOverviews = true );
 
   /*-[ SIGNALS SECTION ]-----------------------------------------------------*/
 
diff --git a/Modules/Visualization/Monteverdi/src/mvdMainWindow.cxx b/Modules/Visualization/Monteverdi/src/mvdMainWindow.cxx
index eed8b9d4730a7932afd5a4f4c95aeba265bda98f..528e614a2e5b9f177f98681565104ecacccd3463 100644
--- a/Modules/Visualization/Monteverdi/src/mvdMainWindow.cxx
+++ b/Modules/Visualization/Monteverdi/src/mvdMainWindow.cxx
@@ -1363,7 +1363,7 @@ MainWindow
 /*****************************************************************************/
 void
 MainWindow
-::ImportImages( const QStringList & filenames, bool enableOverviews )
+::ImportImages( const QStringList & filenames, bool enableOverviews /*= true*/)
 {
   if( filenames.isEmpty() )
     return;