diff --git a/Instructions/Labs/LAB_03d-Manage_Azure_Resources_by_Using_Azure_CLI.md b/Instructions/Labs/LAB_03d-Manage_Azure_Resources_by_Using_Azure_CLI.md
index 10ea14a8..f972263e 100644
--- a/Instructions/Labs/LAB_03d-Manage_Azure_Resources_by_Using_Azure_CLI.md
+++ b/Instructions/Labs/LAB_03d-Manage_Azure_Resources_by_Using_Azure_CLI.md
@@ -95,7 +95,7 @@ In this task, you will managing configuration of the Azure managed disk by using
 1. To verify that the change took effect, run the following:
 
    ```sh
-   az disk show --resource-group $RGNAME --name $DISKNAME --query diskSizeGb
+   az disk show --resource-group $RGNAME --name $DISKNAME --query diskSizeGB
    ```
 
 1. To change the disk performance SKU to **Premium_LRS**, from the Bash session within Cloud Shell, run the following: