diff --git a/libnxwidgets/include/cnxstring.hxx b/libnxwidgets/include/cnxstring.hxx
index 247919116..50adea21c 100644
--- a/libnxwidgets/include/cnxstring.hxx
+++ b/libnxwidgets/include/cnxstring.hxx
@@ -220,7 +220,7 @@ namespace NXWidgets
      * Destructor.
      */
 
-    inline ~CNxString()
+    virtual inline ~CNxString()
     {
       delete[] m_text;
       m_text = (FAR nxwidget_char_t *)NULL;