diff --git a/asciiquarium_ng.py b/asciiquarium_ng.py
index 0797c0b..643d52d 100755
--- a/asciiquarium_ng.py
+++ b/asciiquarium_ng.py
@@ -443,7 +443,7 @@ class Aquarium:
             cb_args=[0, 0, 0, anim_speed],
             default_color='g',
             die_offscreen=False,
-            death_cb=self.add_seaweed,
+            death_cb=lambda e, aq: aq.add_seaweed(e),
             die_time=die_t,
         ))