diff --git a/x-pack/legacy/plugins/spaces/index.ts b/x-pack/legacy/plugins/spaces/index.ts
index 2f3e5e0a86d214..79c57e564b4e14 100644
--- a/x-pack/legacy/plugins/spaces/index.ts
+++ b/x-pack/legacy/plugins/spaces/index.ts
@@ -17,7 +17,13 @@ export const spaces = (kibana: Record<string, any>) =>
     configPrefix: 'xpack.spaces',
     publicDir: resolve(__dirname, 'public'),
     require: ['kibana', 'elasticsearch', 'xpack_main'],
-
+    config(Joi: any) {
+      return Joi.object({
+        enabled: Joi.boolean().default(true),
+      })
+        .unknown()
+        .default();
+    },
     uiExports: {
       managementSections: [],
       apps: [],