diff --git a/charts/user-monitoring/templates/_user-am-config-mailcatcher.yaml b/charts/user-monitoring/templates/_user-am-config-mailcatcher.yaml
index 6d0d275..095dd5f 100644
--- a/charts/user-monitoring/templates/_user-am-config-mailcatcher.yaml
+++ b/charts/user-monitoring/templates/_user-am-config-mailcatcher.yaml
@@ -5,7 +5,7 @@ kind: AlertmanagerConfig
 metadata:
   name: {{ .Values.user }}-mailcatcher
   labels:
-    alertmanagerConfig: {{ .Values.user }}-mailcatcher
+    alertmanagerConfig: {{ .Values.user }}-alertmanager
 spec:
   route:
     receiver: mailcatcher
diff --git a/charts/user-monitoring/templates/_user-am.yaml b/charts/user-monitoring/templates/_user-am.yaml
index 9d34b6c..c475831 100644
--- a/charts/user-monitoring/templates/_user-am.yaml
+++ b/charts/user-monitoring/templates/_user-am.yaml
@@ -11,8 +11,10 @@ spec:
     matchNames:
     - {{ .Values.user }}-monitoring
   alertmanagerConfigSelector:
+    matchLabels:
+      alertmanagerConfig: {{ .Values.user }}-alertmanager
   image: quay.io/prometheus/alertmanager:v0.25.0
-  replicas: 2
+  replicas: 1
   resources:
     requests:
       cpu: 10m