--- old/src/hotspot/share/oops/oop.cpp	2019-08-13 12:39:52.876274979 +0200
+++ new/src/hotspot/share/oops/oop.cpp	2019-08-13 12:39:52.564269568 +0200
@@ -105,8 +105,8 @@
     return false;
   }
 
-  // Header verification: the mark is typically non-NULL. If we're
-  // at a safepoint, it must not be null.
+  // Header verification: the mark is typically non-zero. If we're
+  // at a safepoint, it must not be zero.
   // Outside of a safepoint, the header could be changing (for example,
   // another thread could be inflating a lock on this object).
   if (ignore_mark_word) {