--- old/test/hotspot/jtreg/gc/TestVerifySilently.java	2018-06-08 19:43:27.916246059 +0200
+++ new/test/hotspot/jtreg/gc/TestVerifySilently.java	2018-06-08 19:43:27.645234300 +0200
@@ -25,6 +25,7 @@
  * @key gc
  * @bug 8032771
  * @summary Test silent verification.
+ * @requires vm.gc != "Z"
  * @library /test/lib
  * @modules java.base/jdk.internal.misc
  */