--- a/src/hotspot/share/memory/allocation.hpp	Mon Oct 02 18:56:30 2017 -0400
+++ b/src/hotspot/share/memory/allocation.hpp	Mon Oct 02 16:00:42 2017 -0700
@@ -233,7 +233,6 @@
   void print_address_on(outputStream* st) const;  // nonvirtual address printing
 
 #define METASPACE_OBJ_TYPES_DO(f) \
-  f(Unknown) \
   f(Class) \
   f(Symbol) \
   f(TypeArrayU1) \