diff --git a/src/admin/pages/MindSearchPage.tsx b/src/admin/pages/MindSearchPage.tsx
index 8fe356a..1297449 100644
--- a/src/admin/pages/MindSearchPage.tsx
+++ b/src/admin/pages/MindSearchPage.tsx
@@ -38,11 +38,20 @@ const routeLabels: Record<keyof MindSearchRoutes, string> = {
 };
 
 function mergeConfig(config: MindSearchConfig): MindSearchConfig {
+  const configuredServices = config.services ?? [];
+  const configuredServiceIds = new Set(configuredServices.map((service) => service.id));
+  const services = configuredServices.length
+    ? [
+        ...configuredServices,
+        ...builtInServices.filter((service) => !configuredServiceIds.has(service.id)),
+      ]
+    : builtInServices;
+
   return {
     ...initial,
     ...config,
     settings: { ...initial.settings, ...config.settings },
-    services: config.services?.length ? config.services : builtInServices,
+    services,
     routes: { ...initial.routes, ...config.routes },
   };
 }