diff --git a/game/begin.coffee b/game/begin.coffee
index 116b8c9..30dee01 100644
--- a/game/begin.coffee
+++ b/game/begin.coffee
@@ -15,6 +15,8 @@ salet.game_version = "1.0"
 $.holdReady( true )
 $.getJSON('game/procgen/'+i18n.lang+'.json', (data) ->
   Improv = new ImprovEngine(data, {
+    rng: () ->
+      return salet.rnd.randf()
     filters: [
       ImprovEngine.filters.mismatchFilter()
     ]