src/jdk.jpackage/linux/classes/jdk/jpackage/internal/LinuxAppImageBuilder.java

@@ -191,13 +191,12 @@
 
         // create the additional launchers, if any
         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, root);
+            createLauncherForEntryPoint(
+                    AddLauncherArguments.merge(originalParams, entryPoint));
         }
 
         // Copy class path entries to Java folder
         copyApplication();