diff --git a/api.txt b/api.txt
index 25e27a9..5a4f7cb 100644
--- a/api.txt
+++ b/api.txt
@@ -699,6 +699,8 @@ External Settings for "minetest.conf"
                             is false)
    'mobs_spawn_protected'   if set to false then mobs will not spawn in protected
                             areas (default is true)
+   'mobs_spawn_monster_protected'   if set to false then monsters will not spawn in
+                            protected areas (default is true)
    'remove_far_mobs'        if true then untamed mobs that are outside players
                              visual range will be removed (default is true)
    'mobname'                can change specific mob chance rate (0 to disable) and