diff --git a/001-IntroToKubernetes/Student/Resources/Challenge-01/build-machine/docker-build-machine-vm.json b/001-IntroToKubernetes/Student/Resources/Challenge-01/build-machine/docker-build-machine-vm.json
index 7597c9c4f2..ae71c80b69 100644
--- a/001-IntroToKubernetes/Student/Resources/Challenge-01/build-machine/docker-build-machine-vm.json
+++ b/001-IntroToKubernetes/Student/Resources/Challenge-01/build-machine/docker-build-machine-vm.json
@@ -17,8 +17,9 @@
     },
     "adminPassword": {
       "type": "securestring",
+      "minLength": 12,
       "metadata": {
-        "description": "Password for the Virtual Machine."
+        "description": "Password for the Virtual Machine. That is 12 characters or more, with both uppercase, lowercase, numerical and special characters!"
       }
     },
     "ubuntuOSVersion": {