--- old/src/java.base/share/classes/jdk/internal/misc/VM.java	Tue Mar  8 21:59:19 2016
+++ new/src/java.base/share/classes/jdk/internal/misc/VM.java	Tue Mar  8 21:59:19 2016
@@ -164,7 +164,7 @@
     public static void initLevel(int value) {
         synchronized (lock) {
             if (value <= initLevel || value > SYSTEM_BOOTED)
-                throw new InternalError();
+                throw new InternalError("Bad level: " + value);
             initLevel = value;
             lock.notifyAll();
         }