--- old/test/lib/sun/hotspot/gc/GC.java	2018-06-08 19:43:42.518879613 +0200
+++ new/test/lib/sun/hotspot/gc/GC.java	2018-06-08 19:43:42.253868115 +0200
@@ -36,7 +36,8 @@
     Serial(1),
     Parallel(2),
     ConcMarkSweep(3),
-    G1(4);
+    G1(4),
+    Z(5);
 
     private static final WhiteBox WB = WhiteBox.getWhiteBox();