diff --git a/Instructions/Labs/LAB_03b-Manage_Azure_Resources_by_Using_ARM_Templates.md b/Instructions/Labs/LAB_03b-Manage_Azure_Resources_by_Using_ARM_Templates.md
index c04f52aa..51bdd207 100644
--- a/Instructions/Labs/LAB_03b-Manage_Azure_Resources_by_Using_ARM_Templates.md
+++ b/Instructions/Labs/LAB_03b-Manage_Azure_Resources_by_Using_ARM_Templates.md
@@ -77,9 +77,6 @@ In this task, you will create an Azure disk resource by using an Azure Resource
    "sourceUri": {
        "type": "String"
    },
-   "sourceImageVersionId": {
-       "type": "String"
-   },
    "osType": {
        "type": "String"
    },