--- old/src/hotspot/share/classfile/systemDictionary.cpp	2018-05-21 11:52:03.683913351 +0200
+++ new/src/hotspot/share/classfile/systemDictionary.cpp	2018-05-21 11:52:03.415908576 +0200
@@ -2297,7 +2297,7 @@
       // cleared if revocation occurs too often for this type
       // NOTE that we must only do this when the class is initally
       // defined, not each time it is referenced from a new class loader
-      if (k->class_loader() == class_loader()) {
+      if (k->class_loader() == class_loader() && !k->is_value()) {
         k->set_prototype_header(markOopDesc::biased_locking_prototype());
       }
     }