diff --git a/src/main/java/org/jboss/threads/EnhancedQueueExecutor.java b/src/main/java/org/jboss/threads/EnhancedQueueExecutor.java
index 3d8a6b6..5a70548 100644
--- a/src/main/java/org/jboss/threads/EnhancedQueueExecutor.java
+++ b/src/main/java/org/jboss/threads/EnhancedQueueExecutor.java
@@ -191,7 +191,7 @@ public final class EnhancedQueueExecutor extends EnhancedQueueExecutorBase6 impl
      * The access control context of the creating thread.
      * Will be set to null when the MBean is not registered.
      */
-    private final AccessControlContext acc;
+    private volatile AccessControlContext acc;
     /**
      * The context handler for the user-defined context.
      */
@@ -1861,11 +1861,16 @@ void completeTermination() {
                 waiters = waiters.getNext();
             }
             tail.setNext(TERMINATE_COMPLETE);
-            if (this.acc != null) {
-                final Object handle = this.handle;
-                if (handle != null) {
-                    intr = intr || Thread.interrupted();
-                    doPrivileged(new MBeanUnregisterAction(handle), acc);
+            if (!DISABLE_MBEAN) {
+                //The check for DISABLE_MBEAN is redundant as acc would be null,
+                //but GraalVM needs the hint so to not make JMX reachable.
+                if (this.acc != null) {
+                    final Object handle = this.handle;
+                    if (handle != null) {
+                        intr = intr || Thread.interrupted();
+                        doPrivileged(new MBeanUnregisterAction(handle), acc);
+                    }
+                    this.acc = null;
                 }
             }
         } finally {