diff --git a/src/lib/routes/admin-api/config.js b/src/lib/routes/admin-api/config.js
index f236075758..93311363c7 100644
--- a/src/lib/routes/admin-api/config.js
+++ b/src/lib/routes/admin-api/config.js
@@ -6,7 +6,8 @@ class ConfigController extends Controller {
     constructor(config, { versionService }) {
         super(config);
         this.versionService = versionService;
-        const authenticationType = config.authentication.type;
+        const authenticationType =
+            config.authentication && config.authentication.type;
         this.uiConfig = {
             ...config.ui,
             authenticationType,