diff --git a/PostgreSQL/prism/prism.sql b/PostgreSQL/prism/prism.sql
index f596015..07e7d2b 100644
--- a/PostgreSQL/prism/prism.sql
+++ b/PostgreSQL/prism/prism.sql
@@ -156,7 +156,7 @@ order by count((world_id, x, y, z)) desc;
 select world_id, x, y, z, count((world_id, x, y, z))
 from activities
 where action_id = (select action_id from actions where action = 'block-break')
-  and cause_id is null
+  and cause_entity_type_id is null
   and timestamp > EXTRACT(EPOCH FROM current_timestamp(0))::bigint - 86400 * 1
 group by world_id, x, y, z
 order by count((world_id, x, y, z)) desc;