diff --git a/charts/matrix/templates/_helpers.tpl b/charts/matrix/templates/_helpers.tpl
new file mode 100644
index 0000000..063b2b4
--- /dev/null
+++ b/charts/matrix/templates/_helpers.tpl
@@ -0,0 +1,7 @@
+{{- define "clientSecret" -}}
+{{- if .Values.oauth2.clientSecret -}}
+{{- .Values.oauth2.clientSecret -}}
+{{- else -}}
+{{- randAlphaNum 32 -}}
+{{- end -}}
+{{- end -}}