diff --git a/src/api/types/misc.ts b/src/api/types/misc.ts
index 31221cd60..ac47af004 100644
--- a/src/api/types/misc.ts
+++ b/src/api/types/misc.ts
@@ -206,7 +206,7 @@ export interface ApiAppConfig {
   autologinDomains: string[];
   urlAuthDomains: string[];
   whitelistedDomains: string[];
-  premiumInvoiceSlug: string;
+  premiumInvoiceSlug?: string;
   premiumBotUsername: string;
   isPremiumPurchaseBlocked: boolean;
   isGiveawayGiftsPurchaseAvailable: boolean;
diff --git a/src/limits.ts b/src/limits.ts
index e1c572ed4..7e32e2aec 100644
--- a/src/limits.ts
+++ b/src/limits.ts
@@ -87,7 +87,6 @@ export const DEFAULT_APP_CONFIG: ApiAppConfig = {
   canLimitNewMessagesWithoutPremium: false,
   readDateExpiresAt: 604800,
   premiumBotUsername: 'PremiumBot',
-  premiumInvoiceSlug: 'abc',
   premiumPromoOrder: [
     'stories',
     'more_upload',