diff --git a/test/hotspot/jtreg/gc/z/TestSoftMaxHeapSizeFlag.java b/test/hotspot/jtreg/gc/z/TestSoftMaxHeapSizeFlag.java
index 001f41a835d..9fe339430ac 100644
--- a/test/hotspot/jtreg/gc/z/TestSoftMaxHeapSizeFlag.java
+++ b/test/hotspot/jtreg/gc/z/TestSoftMaxHeapSizeFlag.java
@@ -25,6 +25,7 @@
 
 /*
  * @test TestSoftMaxHeapSizeFlag
+ * @requires vm.gc.Z & !vm.graal.enabled
  * @key gc
  * @library /test/lib
  * @modules java.base/jdk.internal.misc