diff --git a/03-AdvancedPermissionsAndAccounts/02_Boundaries/02_a4ladminboundary.json b/03-AdvancedPermissionsAndAccounts/02_Boundaries/02_a4ladminboundary.json
index 510a958..478fd0f 100644
--- a/03-AdvancedPermissionsAndAccounts/02_Boundaries/02_a4ladminboundary.json
+++ b/03-AdvancedPermissionsAndAccounts/02_Boundaries/02_a4ladminboundary.json
@@ -53,7 +53,7 @@
               "iam:SimulatePrincipalPolicy",
               "iam:SimulateCustomPolicy" 
           ],
-          "NotResource": "arn:aws:iam::MASTERACCOUNTNUMBER:user/bob"
+          "NotResource": "arn:aws:iam::MASTERACCOUNTNUMBER:user/${aws:username}"
       },
       {
           "Sid": "NoBoundaryPolicyEdit",
@@ -76,4 +76,4 @@
           "Resource": "*"
       }
   ]
-}
\ No newline at end of file
+}