diff --git a/Build and Secure Networks in Google Cloud: Challenge Lab.md b/Build and Secure Networks in Google Cloud: Challenge Lab.md
index 3292628..357817d 100644
--- a/Build and Secure Networks in Google Cloud: Challenge Lab.md	
+++ b/Build and Secure Networks in Google Cloud: Challenge Lab.md	
@@ -75,4 +75,10 @@ gcloud compute instances add-tags juice-shop --tags=<SSH internal network tag> -
 ```yaml
 ssh <internal IP of the juice-shop>
 ```
+* If you get permission denied (publickey) error
+* Run following command in ssh command line:
+  
+```yaml
+gcloud compute ssh juice-shop --internal-ip
+```