diff --git a/bootstrapvz/providers/ec2/manifest-schema.yml b/bootstrapvz/providers/ec2/manifest-schema.yml
index f7be432..3bf60ce 100644
--- a/bootstrapvz/providers/ec2/manifest-schema.yml
+++ b/bootstrapvz/providers/ec2/manifest-schema.yml
@@ -20,7 +20,7 @@ properties:
         enum:
         - none
         - simple
-    required: [virtualization]
+    required: [description, virtualization]
   system:
     type: object
     properties: