diff --git a/README.md b/README.md
index dd5b711..28dd84e 100644
--- a/README.md
+++ b/README.md
@@ -55,17 +55,8 @@ run minetest, select WorstBlockGame, create a map with the following settings:
 
 * Name: *just pick a nice one*
 * Seed: *some random number*
-* Mapgen: `v7`
+* Mapgen: `v7` (all others will be disabled anyway)
 * Game: `WorstBlockGame`, duh.
-* Mapgen flags:
-  * `[x]` Caves
-  * `[x]` Dungeons
-  * `[x]` Decorations
-* Mapgen-specific flags:
-  * `[x]` Caverns
-  * `[x]` Rivers
-  * `[x]` Mountains
-  * `[x]` Floatlands
 
 Then play the map.
 
diff --git a/game.conf b/game.conf
index 189b951..fb06863 100644
--- a/game.conf
+++ b/game.conf
@@ -1 +1,3 @@
 name = WorstBlockGame
+allowed_mapgens = v7
+disallowed_mapgen_settings = mg_flags, mgv7_spflags