diff --git a/overlays/debug/rootfs/warewulf/template-variables.md.ww b/overlays/debug/rootfs/warewulf/template-variables.md.ww
index 8c92c4f5..1a2940eb 100644
--- a/overlays/debug/rootfs/warewulf/template-variables.md.ww
+++ b/overlays/debug/rootfs/warewulf/template-variables.md.ww
@@ -72,6 +72,7 @@ data from other structures.
 - BuildTime: {{ .BuildTime }}
 - BuildTimeUnix: {{ .BuildTimeUnix }}
 - BuildSource: {{ .BuildSource }}
+- Overlay: {{ .Overlay }}
 
 
 ## Network