diff --git a/doc/API/index.md b/doc/API/index.md
index 41971c39ae..26ae5e5e1f 100644
--- a/doc/API/index.md
+++ b/doc/API/index.md
@@ -1763,6 +1763,8 @@ Output:
 }
 ```
 
+## ARP
+
 ### Function: `list_arp`
 
 Retrieve a specific ARP entry or all ARP enties for a device