src/java.desktop/share/classes/javax/swing/plaf/metal/MetalLabelUI.java

@@ -85,9 +85,9 @@
      */
     protected void paintDisabledText(JLabel l, Graphics g, String s, int textX, int textY)
     {
         int mnemIndex = l.getDisplayedMnemonicIndex();
         g.setColor(UIManager.getColor("Label.disabledForeground"));
-        SwingUtilities2.drawStringUnderlineCharAt(l, g, s, mnemIndex,
+        getTextUIDrawing().drawStringUnderlineCharAt(l, g, s, mnemIndex,
                                                    textX, textY);
     }
 }