diff --git a/helm/taskplaner/templates/ingress.yaml b/helm/taskplaner/templates/ingress.yaml
index 2cc026d..b630b81 100644
--- a/helm/taskplaner/templates/ingress.yaml
+++ b/helm/taskplaner/templates/ingress.yaml
@@ -33,7 +33,7 @@ spec:
             pathType: {{ .pathType }}
             backend:
               service:
-                name: {{ include "taskplaner.fullname" $ }}
+                name: {{ $.Values.service.name | default (include "taskplaner.fullname" $) }}
                 port:
                   name: http
           {{- end }}
diff --git a/helm/taskplaner/templates/service.yaml b/helm/taskplaner/templates/service.yaml
index 9e31ac8..f2a7334 100644
--- a/helm/taskplaner/templates/service.yaml
+++ b/helm/taskplaner/templates/service.yaml
@@ -1,7 +1,7 @@
 apiVersion: v1
 kind: Service
 metadata:
-  name: {{ include "taskplaner.fullname" . }}
+  name: {{ .Values.service.name | default (include "taskplaner.fullname" .) }}
   labels:
     {{- include "taskplaner.labels" . | nindent 4 }}
 spec:
diff --git a/helm/taskplaner/values.yaml b/helm/taskplaner/values.yaml
index 6c4ff40..21911f9 100644
--- a/helm/taskplaner/values.yaml
+++ b/helm/taskplaner/values.yaml
@@ -36,6 +36,9 @@ securityContext:
       - ALL
 
 service:
+  # Name override to avoid Kubernetes creating TASKPLANER_* env vars
+  # which conflict with the app's envPrefix
+  name: "tp-app"
   type: ClusterIP
   port: 80
   targetPort: 3000