--- old/src/jdk.jpackage/windows/classes/jdk/jpackage/internal/WindowsAppImageBuilder.java	2019-03-08 15:28:28.571136600 -0500
+++ new/src/jdk.jpackage/windows/classes/jdk/jpackage/internal/WindowsAppImageBuilder.java	2019-03-08 15:28:27.603924200 -0500
@@ -254,9 +254,8 @@
         List<Map<String, ? super Object>> entryPoints =
                 StandardBundlerParam.ADD_LAUNCHERS.fetchFrom(params);
         for (Map<String, ? super Object> entryPoint : entryPoints) {
-            Map<String, ? super Object> tmp = new HashMap<>(originalParams);
-            tmp.putAll(entryPoint);
-            createLauncherForEntryPoint(tmp);
+            createLauncherForEntryPoint(
+                    AddLauncherArguments.merge(originalParams, entryPoint));
         }
     }