diff --git a/podman-peerjs/90_prune.sh b/podman-peerjs/90_prune.sh
index 47f5a6a..b005f0e 100755
--- a/podman-peerjs/90_prune.sh
+++ b/podman-peerjs/90_prune.sh
@@ -8,4 +8,4 @@ ensure_pwd_is_scriptdir
 ensure_not_root
 
 podman rm ${container_name}
-podman rmi ${upstream_image}
+podman rmi "$(podman images -a -q -- ${upstream_image})"