diff --git a/apps/sim/hooks/use-referral-attribution.ts b/apps/sim/hooks/use-referral-attribution.ts
index 9e5ba22fc..2bd458133 100644
--- a/apps/sim/hooks/use-referral-attribution.ts
+++ b/apps/sim/hooks/use-referral-attribution.ts
@@ -7,7 +7,12 @@ const logger = createLogger('ReferralAttribution')
 
 const COOKIE_NAME = 'sim_utm'
 
-const TERMINAL_REASONS = new Set(['account_predates_cookie', 'invalid_cookie'])
+const TERMINAL_REASONS = new Set([
+  'account_predates_cookie',
+  'invalid_cookie',
+  'no_utm_cookie',
+  'no_matching_campaign',
+])
 
 /**
  * Fires a one-shot `POST /api/attribution` when a `sim_utm` cookie is present.
diff --git a/packages/db/schema.ts b/packages/db/schema.ts
index 924e4bcde..090ab0855 100644
--- a/packages/db/schema.ts
+++ b/packages/db/schema.ts
@@ -743,7 +743,6 @@ export const referralCampaigns = pgTable(
   },
   (table) => ({
     activeIdx: index('referral_campaigns_active_idx').on(table.isActive),
-    codeIdx: uniqueIndex('referral_campaigns_code_idx').on(table.code),
   })
 )