diff --git a/frontend/index.html b/frontend/index.html
index f229d41..f6cea32 100644
--- a/frontend/index.html
+++ b/frontend/index.html
@@ -48,6 +48,7 @@
       document.addEventListener('DOMContentLoaded', () => window.refreshTheme())
 
       // Template variable from Golang process
+      const maxSecretExpire = {{ .MaxSecretExpiry }}
       const version = "{{ .Version }}"
       window.OTSCustomize = JSON.parse('{{ .Customize.ToJSON }}')
     </script>
diff --git a/main.go b/main.go
index e4e9dbc..7e2b931 100644
--- a/main.go
+++ b/main.go
@@ -182,10 +182,12 @@ func handleIndex(w http.ResponseWriter, r *http.Request) {
 	if err := indexTpl.Execute(w, struct {
 		Customize          customize
 		InlineContentNonce string
+		MaxSecretExpiry    int64
 		Version            string
 	}{
 		Customize:          cust,
 		InlineContentNonce: inlineContentNonceStr,
+		MaxSecretExpiry:    cfg.SecretExpiry,
 		Version:            version,
 	}); err != nil {
 		http.Error(w, errors.Wrap(err, "executing template").Error(), http.StatusInternalServerError)