--- old/test/hotspot/jtreg/gc/arguments/TestNewSizeFlags.java	2020-02-06 19:34:26.954464215 +0100
+++ new/test/hotspot/jtreg/gc/arguments/TestNewSizeFlags.java	2020-02-06 19:34:26.790464229 +0100
@@ -26,7 +26,7 @@
  * @key gc
  * @bug 8025166
  * @summary Verify that young gen size conforms values specified by NewSize, MaxNewSize and Xmn options
- * @requires vm.gc != "Z"
+ * @requires vm.gc != "Z" & vm.gc != "Shenandoah"
  * @library /test/lib
  * @modules java.base/jdk.internal.misc
  *          java.management