diff --git a/game/main.fnl b/game/main.fnl
index 21651fb..f8e4c4d 100644
--- a/game/main.fnl
+++ b/game/main.fnl
@@ -9,7 +9,7 @@
 (local dev (require "src/levels/dev.fnl"))
 
 (local level dev)
-(local debug true)
+(local debug false)
 
 (var pool nil)
 
diff --git a/game/src/levels/dev.fnl b/game/src/levels/dev.fnl
index 60ab9a8..10ce7b4 100644
--- a/game/src/levels/dev.fnl
+++ b/game/src/levels/dev.fnl
@@ -19,13 +19,10 @@
     ))
 )
 
-(lambda collider-manager [bump-world]
-  (local manager {})
-  (lambda manager.addToGroup [self group-name entity]
+  (local collider-manager {})
+  (lambda collider-manager.addToGroup [self group-name entity]
     (when (= group-name :hitbox)
-      ; (utils.debug-print {:adding entity})
-      (bump-world:add entity (unpack entity.hitbox))))
-  manager)
+      (self.pool.data.bump-world:add entity (unpack entity.hitbox))))
 
 (lambda fog-on-war []
   (local system {
@@ -91,7 +88,7 @@
       }
       :systems [
         (nata:oop)
-        (collider-manager bump-world)
+        collider-manager
         camera
         walls
         (fog-on-war)