diff --git a/docs/book/src/developer/core/tilt.md b/docs/book/src/developer/core/tilt.md
index ebe0adf7a22b..2c9578147bea 100644
--- a/docs/book/src/developer/core/tilt.md
+++ b/docs/book/src/developer/core/tilt.md
@@ -114,6 +114,7 @@ enable_providers:
 {{#tab KubeVirt}}
 
 ```yaml
+default_registry: gcr.io/your-project-name-here
 enable_providers:
 - kubevirt
 - kubeadm-bootstrap