diff --git a/src/play_clj/core_graphics.clj b/src/play_clj/core_graphics.clj
index dff9515..96fc543 100644
--- a/src/play_clj/core_graphics.clj
+++ b/src/play_clj/core_graphics.clj
@@ -173,6 +173,8 @@
 
 (defmulti draw-entity! #(-> % second :type))
 
+(defmethod draw-entity! nil [_])
+
 (defmethod draw-entity! :actor
   [[^SpriteBatch batch {:keys [^Actor object] :as entity}]]
   (assert object)