--- old/src/java.desktop/macosx/classes/sun/lwawt/macosx/CTrayIcon.java	2019-02-05 14:57:27.000000000 +0530
+++ new/src/java.desktop/macosx/classes/sun/lwawt/macosx/CTrayIcon.java	2019-02-05 14:57:26.000000000 +0530
@@ -357,7 +357,7 @@
     class IconObserver implements ImageObserver {
         @Override
         public boolean imageUpdate(Image image, int flags, int x, int y, int width, int height) {
-            if (image != target.getImage()) // if the image has been changed
+            if (target == null || image != target.getImage()) //if the image has been changed
             {
                 return false;
             }