diff --git a/_data/concepts.yml b/_data/concepts.yml
index a91c1b86d6..bd1b5d7f7e 100644
--- a/_data/concepts.yml
+++ b/_data/concepts.yml
@@ -2,14 +2,14 @@ bigheader: "Concepts"
 abstract: "Detailed explanations of Kubernetes system concepts and abstractions."
 toc:
 - docs/concepts/index.md
-section:
-- title: Kubernetes Objects
   section:
-  - docs/concepts/abstractions/overview.md
-  - docs/concepts/abstractions/pod.md
-  - title: Controllers
+  - title: Kubernetes Objects
     section:
-    - docs/concepts/abstractions/controllers/statefulsets.md
+    - docs/concepts/abstractions/overview.md
+    - docs/concepts/abstractions/pod.md
+    - title: Controllers
+      section:
+      - docs/concepts/abstractions/controllers/statefulsets.md
 
 - title: Object Metadata
   section:
diff --git a/docs/concepts/index.md b/docs/concepts/index.md
index 9ae7b9134b..bbe2c9844c 100644
--- a/docs/concepts/index.md
+++ b/docs/concepts/index.md
@@ -30,7 +30,7 @@ In addition, Kubernetes contains a number of higher-level abstractions called Co
 
 * ReplicaSet
 * Deployment
-* [StatefulSet](/docs/concepts/abstractions/controllers/statefulsets/))
+* [StatefulSet](/docs/concepts/abstractions/controllers/statefulsets/)
 * DaemonSet
 * Job