diff --git a/doc/guide.md b/doc/guide.md
index 10b1da0f..269ed11c 100644
--- a/doc/guide.md
+++ b/doc/guide.md
@@ -2,3 +2,4 @@
 # Guide
 
 - [[datadir]]#
+- [[custom-service]]#
diff --git a/doc/index.md b/doc/index.md
index e4d1cd32..65658955 100644
--- a/doc/index.md
+++ b/doc/index.md
@@ -20,7 +20,6 @@ See:
 - [[services]]#
 - [[contributing]]#
 - [[guide]]#
-- [[custom-service]]#
 
 ## Demo