diff --git a/Earthfile b/Earthfile
index f402aca..5a01ef9 100644
--- a/Earthfile
+++ b/Earthfile
@@ -116,7 +116,7 @@ ELSE
 END
 
 ARG IMAGE_PATH=$IMAGE_REGISTRY/$IMAGE_REPO:$K8S_DISTRIBUTION-$K8S_VERSION-$IMAGE_TAG
-ARG ISO_DISK_IMG=$IMAGE_REGISTRY/$IMAGE_REPO/$ISO_NAME:$IMAGE_TAG
+ARG ISO_DISK_IMG=$IMAGE_REGISTRY/$IMAGE_REPO:$IMAGE_TAG
 ARG CMDLINE="stylus.registration"
 
 build-all-images: