diff --git a/charts/library/common/Chart.yaml b/charts/library/common/Chart.yaml
index 69edd259..1d8e2da7 100644
--- a/charts/library/common/Chart.yaml
+++ b/charts/library/common/Chart.yaml
@@ -2,7 +2,7 @@ apiVersion: v2
 name: common
 description: Function library for Helm charts
 type: library
-version: 0.2.0
+version: 0.2.1
 kubeVersion: ">=1.16.0-0"
 keywords:
   - common
@@ -13,6 +13,8 @@ maintainers:
     email: me@bjw-s.dev
 annotations:
   artifacthub.io/changes: |-
+    - kind: fixed
+      description: Make sure service.monitor is optional.
     - kind: removed
       description: BREAKING - Removed support for the `openvpn` and `wireguard` VPN types.
     - kind: added
diff --git a/charts/library/common/templates/_service.tpl b/charts/library/common/templates/_service.tpl
index 4b84b685..2aa929c2 100644
--- a/charts/library/common/templates/_service.tpl
+++ b/charts/library/common/templates/_service.tpl
@@ -17,7 +17,7 @@ Renders the Service objects required by the chart.
       {{- include "common.classes.service" $ | nindent 0 -}}
 
       {{/* Include a serviceMonitor if required */}}
-      {{- if $service.monitor.enabled | default false -}}
+      {{- if ($service.monitor).enabled | default false -}}
         {{- $_ := set $ "ObjectValues" (dict "serviceMonitor" $serviceValues.monitor) -}}
         {{- $_ := set $.ObjectValues.serviceMonitor "nameOverride" $serviceValues.nameOverride -}}