diff --git a/jsonnet/kube-prometheus/prometheus/prometheus.libsonnet b/jsonnet/kube-prometheus/prometheus/prometheus.libsonnet
index 958206ad92b960e2b66d09e86fcab61aa3956c5a..198260213156ec121cfc4574f94fde0a14a413a8 100644
--- a/jsonnet/kube-prometheus/prometheus/prometheus.libsonnet
+++ b/jsonnet/kube-prometheus/prometheus/prometheus.libsonnet
@@ -18,6 +18,8 @@ local k = import 'ksonnet/ksonnet.beta.4/k.libsonnet';
     },
 
     prometheus+:: {
+      name: 'k8s',
+      replicas: 2,
       rules: {},
       namespaces: ['default', 'kube-system', $._config.namespace],
     },
@@ -26,10 +28,10 @@ local k = import 'ksonnet/ksonnet.beta.4/k.libsonnet';
   prometheus+:: {
     local p = self,
 
-    name:: 'k8s',
+    name:: $._config.prometheus.name,
     namespace:: $._config.namespace,
     roleBindingNamespaces:: $._config.prometheus.namespaces,
-    replicas:: 2,
+    replicas:: $._config.prometheus.replicas,
     prometheusRules:: $._config.prometheus.rules,
     alertmanagerName:: $.alertmanager.service.metadata.name,