diff --git a/global/overlay/etc/puppet/cosmos-rules.yaml b/global/overlay/etc/puppet/cosmos-rules.yaml
index 096ae54..43e045a 100644
--- a/global/overlay/etc/puppet/cosmos-rules.yaml
+++ b/global/overlay/etc/puppet/cosmos-rules.yaml
@@ -4,4 +4,4 @@
 
 '^internal-sto4-test-k8sm-[0-9].rut.sunet.se$':
   sunet::microk8s::node: 
-    - channel: 1.28/stable
+    channel: 1.28/stable