diff --git a/mutants/mutant-2/swen90006/machine/Machine.java b/mutants/mutant-2/swen90006/machine/Machine.java
index 9bf57316d1c736ea2bd1c62bd6df3c6c0282f331..7c9be2027c4214f05aa1a753c8fd53449477da48 100644
--- a/mutants/mutant-2/swen90006/machine/Machine.java
+++ b/mutants/mutant-2/swen90006/machine/Machine.java
@@ -1,4 +1,4 @@
-package swen90006.machine;
+package swen90006.machine;
 
 import java.util.Arrays;
 import java.util.List;
@@ -40,7 +40,8 @@ public class Machine
   public static final String INSTRUCTION_JZ = "jz";
     
   public static final int NUM_REGS = 32;
-  public static final int MAX_REG = (NUM_REGS - 1);
+  /* mutation MAX_REG = (NUM_REGS -1)*/
+  public static final int MAX_REG = (NUM_REGS + 1);
   public static final int MEMORY_SIZE = 65536; /* 4 x as much memory as a 64 */
   public static final int MAX_ADDR = MEMORY_SIZE-1;