diff --git a/jdk/src/java.base/share/classes/java/lang/ProcessHandleImpl.java b/jdk/src/java.base/share/classes/java/lang/ProcessHandleImpl.java
index 91fa5623174..15a2bd4c029 100644
--- a/jdk/src/java.base/share/classes/java/lang/ProcessHandleImpl.java
+++ b/jdk/src/java.base/share/classes/java/lang/ProcessHandleImpl.java
@@ -51,6 +51,11 @@ import static java.security.AccessController.doPrivileged;
  * @since 9
  */
 final class ProcessHandleImpl implements ProcessHandle {
+    /**
+     * Default size of stack for reaper processes.
+     */
+    private static long REAPER_DEFAULT_STACKSIZE = 128 * 1024;
+
     /**
      * Cache the ProcessHandle of this process.
      */
@@ -79,10 +84,12 @@ final class ProcessHandleImpl implements ProcessHandle {
                 ThreadGroup tg = Thread.currentThread().getThreadGroup();
                 while (tg.getParent() != null) tg = tg.getParent();
                 ThreadGroup systemThreadGroup = tg;
+                final long stackSize = Boolean.getBoolean("jdk.lang.processReaperUseDefaultStackSize")
+                        ? 0 : REAPER_DEFAULT_STACKSIZE;
 
                 ThreadFactory threadFactory = grimReaper -> {
-                    long stackSize = Boolean.getBoolean("jdk.lang.processReaperUseDefaultStackSize") ? 0 : 32768;
-                    Thread t = new Thread(systemThreadGroup, grimReaper, "process reaper", stackSize);
+                    Thread t = new Thread(systemThreadGroup, grimReaper,
+                            "process reaper", stackSize, false);
                     t.setDaemon(true);
                     // A small attempt (probably futile) to avoid priority inversion
                     t.setPriority(Thread.MAX_PRIORITY);