--- a/src/java.desktop/share/classes/com/sun/java/swing/plaf/windows/WindowsLookAndFeel.java	Thu Aug 20 13:00:19 2015 -0500
+++ b/src/java.desktop/share/classes/com/sun/java/swing/plaf/windows/WindowsLookAndFeel.java	Fri Aug 21 20:59:07 2015 +0300
@@ -835,12 +835,12 @@
             "InternalFrame.closeIcon",
                 WindowsIconFactory.createFrameCloseIcon(),
             "InternalFrame.icon",
-               (LazyValue) t -> new Object[]{
+                (LazyValue) t -> new WindowsInternalFrameTitlePane.ScalableIconUIResource(new Object[]{
                     // The constructor takes one arg: an array of UIDefaults.LazyValue
                     // representing the icons
                         SwingUtilities2.makeIcon(getClass(), BasicLookAndFeel.class, "icons/JavaCup16.png"),
                         SwingUtilities2.makeIcon(getClass(), WindowsLookAndFeel.class, "icons/JavaCup32.png")
-                },
+                }),
             // Internal Frame Auditory Cue Mappings
             "InternalFrame.closeSound", "win.sound.close",
             "InternalFrame.maximizeSound", "win.sound.maximize",

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/javax/swing/UIDefaults/8133926/InternalFrameIcon.java	Fri Aug 21 20:59:07 2015 +0300
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import javax.swing.Icon;
+import javax.swing.SwingUtilities;
+import javax.swing.UIManager;
+import javax.swing.UnsupportedLookAndFeelException;
+
+import static javax.swing.UIManager.getInstalledLookAndFeels;
+
+/**
+ * @test
+ * @bug 8133926
+ */
+public final class InternalFrameIcon implements Runnable {
+
+    public static void main(final String[] args) throws Exception {
+        for (final UIManager.LookAndFeelInfo laf : getInstalledLookAndFeels()) {
+            SwingUtilities.invokeAndWait(() -> setLookAndFeel(laf));
+            SwingUtilities.invokeAndWait(new InternalFrameIcon());
+        }
+    }
+
+    private static void setLookAndFeel(final UIManager.LookAndFeelInfo laf) {
+        try {
+            UIManager.setLookAndFeel(laf.getClassName());
+            System.out.println("LookAndFeel: " + laf.getClassName());
+        } catch (ClassNotFoundException | InstantiationException |
+                UnsupportedLookAndFeelException | IllegalAccessException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    @Override
+    public void run() {
+        Object o = UIManager.getDefaults().get("InternalFrame.icon");
+        if (o != null && !(o instanceof Icon)) {
+            throw new RuntimeException("Wrong object: " + o);
+        }
+    }
+}