diff --git a/utils/helm/speckle-preview-service/templates/_helpers.tpl b/utils/helm/speckle-preview-service/templates/_helpers.tpl
index 3c813992e..4685a23af 100644
--- a/utils/helm/speckle-preview-service/templates/_helpers.tpl
+++ b/utils/helm/speckle-preview-service/templates/_helpers.tpl
@@ -23,6 +23,13 @@ If release name contains chart name it will be used as a full name.
 {{- end }}
 {{- end }}
 
+{{/*
+Create the fully qualified domain name of the service
+*/}}
+{{- define "speckle-preview-service.serviceFQDN" -}}
+{{- printf "%s.%s.svc.cluster.local." (include "speckle-preview-service.serviceAccountName" .) .Values.namespace }}
+{{- end }}
+
 {{/*
 Create chart name and version as used by the chart label.
 */}}
diff --git a/utils/helm/speckle-preview-service/templates/tests/test-connection.yaml b/utils/helm/speckle-preview-service/templates/tests/test-connection.yaml
index e3e4c955a..2655a12f8 100644
--- a/utils/helm/speckle-preview-service/templates/tests/test-connection.yaml
+++ b/utils/helm/speckle-preview-service/templates/tests/test-connection.yaml
@@ -2,6 +2,7 @@ apiVersion: v1
 kind: Pod
 metadata:
   name: "{{ include "speckle-preview-service.fullname" . }}-test-connection"
+  namespace: {{ .Values.namespace }}
   labels:
     {{- include "speckle-preview-service.labels" . | nindent 4 }}
   annotations:
@@ -11,5 +12,5 @@ spec:
     - name: wget
       image: busybox
       command: ['wget']
-      args: ['{{ include "speckle-preview-service.fullname" . }}:{{ .Values.service.port }}/readiness']
+      args: ['{{ include "speckle-preview-service.serviceFQDN" . }}:{{ .Values.service.port }}/readiness']
   restartPolicy: Never