diff --git a/jsonnet/kube-prometheus/addons/anti-affinity.libsonnet b/jsonnet/kube-prometheus/addons/anti-affinity.libsonnet
index f71c4589..e266b913 100644
--- a/jsonnet/kube-prometheus/addons/anti-affinity.libsonnet
+++ b/jsonnet/kube-prometheus/addons/anti-affinity.libsonnet
@@ -18,7 +18,7 @@
     },
   },
 
-  antiaffinity(labelSelector, namespace, type, topologyKey): {
+  antiaffinity(labelSelector, namespace, type, topologyKey):: {
     local podAffinityTerm = {
       namespaces: [namespace],
       topologyKey: topologyKey,