diff --git a/MMTk/src/org/mmtk/utility/options/DefragStress.java b/MMTk/src/org/mmtk/utility/options/DefragStress.java
new file mode 100644
index 000000000..d4212fb75
--- /dev/null
+++ b/MMTk/src/org/mmtk/utility/options/DefragStress.java
@@ -0,0 +1,27 @@
+/*
+ *  This file is part of the Jikes RVM project (http://jikesrvm.org).
+ *
+ *  This file is licensed to You under the Common Public License (CPL);
+ *  You may not use this file except in compliance with the License. You
+ *  may obtain a copy of the License at
+ *
+ *      http://www.opensource.org/licenses/cpl1.0.php
+ *
+ *  See the COPYRIGHT.txt file distributed with this work for information
+ *  regarding copyright ownership.
+ */
+package org.mmtk.utility.options;
+
+/**
+ * Should we force degfrag every time the immix space is collected?
+ */
+public final class DefragStress extends org.vmutil.options.BooleanOption {
+  /**
+   * Create the option.
+   */
+  public DefragStress() {
+    super(Options.set, "Defrag Stress",
+        "Should we force degfrag every time the immix space is collected?",
+        false);
+  }
+}