src/java.base/share/classes/com/sun/java/util/jar/pack/intrinsic.properties

@@ -16,11 +16,11 @@
 
 # Module attributes, supported by the tool and not JSR-200
 pack.class.attribute.Module = NH[RUHFH]NH[RUHNH[RUH]]NH[RCH]NH[RCHRCH]
 pack.class.attribute.ConcealedPackages = NH[RUH]
 pack.class.attribute.Version = RUH
-pack.class.attribute.MainClass = RUH
+pack.class.attribute.MainClass = RCH
 pack.class.attribute.TargetPlatform = RUHRUHRUH
 pack.class.attribute.Hashes = RUHNH[RUHRUH]
 
 
 # Note:  Zero-length ("marker") attributes do not need to be specified here.