--- old/modules/jdk.packager/src/antplugin/java/com/sun/javafx/tools/ant/DeployFXTask.java	2017-07-05 12:50:41.000000000 -0700
+++ new/modules/jdk.packager/src/antplugin/java/com/sun/javafx/tools/ant/DeployFXTask.java	2017-07-05 12:50:41.000000000 -0700
@@ -628,6 +628,7 @@
             deployParams.setNeedMenu(prefs.getMenu());
             deployParams.setSystemWide(prefs.getSystemInstall());
             deployParams.setInstalldirChooser(prefs.getInstalldirChooser());
+            deployParams.setSingleton(prefs.getSingleton());
         }
     }