diff --git a/docs/.custom_wordlist.txt b/docs/.custom_wordlist.txt
index 9500f12..2beb819 100644
--- a/docs/.custom_wordlist.txt
+++ b/docs/.custom_wordlist.txt
@@ -25,6 +25,7 @@ respins
 selftests
 signoff
 subtree
+subtrees
 unported
 UKIs
 UKN