diff --git a/supabase/migrations/20260711000011_phase2_triage_rca.sql b/supabase/migrations/20260711000011_phase2_triage_rca.sql
index c532cff..d08bc16 100644
--- a/supabase/migrations/20260711000011_phase2_triage_rca.sql
+++ b/supabase/migrations/20260711000011_phase2_triage_rca.sql
@@ -14,6 +14,7 @@ ALTER TABLE investigations
   ADD COLUMN IF NOT EXISTS fishbone_categories  JSONB;
 
 -- Audit log write helper — SECURITY DEFINER so callers cannot bypass RLS
+DROP FUNCTION IF EXISTS public.write_audit_log CASCADE;
 CREATE OR REPLACE FUNCTION public.write_audit_log(
   p_table_name TEXT,
   p_record_id  UUID,