diff --git a/data/tools/wmllint b/data/tools/wmllint
index 5f4e9aa8d2d..2a142599790 100755
--- a/data/tools/wmllint
+++ b/data/tools/wmllint
@@ -1027,6 +1027,7 @@ mainline = ("An_Orcish_Incursion",
             "Liberty",
             "Northern_Rebirth",
             "Sceptre_of_Fire",
+            "Secrets_of_the_Ancients",
             "Son_Of_The_Black_Eye",
             "The_Hammer_of_Thursagan",
             "The_Rise_Of_Wesnoth",