--- a/src/jdk.jpackage/share/classes/jdk/jpackage/internal/JLinkBundlerHelper.java	Fri Nov 23 09:12:00 2018 -0500
+++ b/src/jdk.jpackage/share/classes/jdk/jpackage/internal/JLinkBundlerHelper.java	Mon Dec 03 08:13:19 2018 -0500
@@ -252,8 +252,7 @@
 
         if (mainJar != null) {
             mainJarType = new ModFile(mainJar).getModType();
-        } else if (mainJar == null &&
-                StandardBundlerParam.MODULE.fetchFrom(params) == null) {
+        } else if (StandardBundlerParam.MODULE.fetchFrom(params) == null) {
             // user specified only main class, all jars will be on the classpath
             mainJarType = ModFile.ModType.UnnamedJar;
         }