diff --git a/src/api/types/misc.ts b/src/api/types/misc.ts
index fb290760b..dea7ca71d 100644
--- a/src/api/types/misc.ts
+++ b/src/api/types/misc.ts
@@ -2,7 +2,7 @@ import type { TeactNode } from '../../lib/teact/teact';
 
 import type { CallbackAction } from '../../global/types';
 import type { IconName } from '../../types/icons';
-import type { LangFnParameters } from '../../util/localization';
+import type { RegularLangFnParameters } from '../../util/localization';
 import type { ApiDocument, ApiPhoto, ApiReaction } from './messages';
 import type { ApiPremiumSection, ApiStarsSubscriptionPricing } from './payments';
 import type { ApiUser } from './users';
@@ -116,10 +116,10 @@ export type ApiNotifyException = {
 export type ApiNotification = {
   localId: string;
   containerSelector?: string;
-  title?: string | LangFnParameters;
-  message: TeactNode | LangFnParameters;
+  title?: string | RegularLangFnParameters;
+  message: TeactNode | RegularLangFnParameters;
   cacheBreaker?: string;
-  actionText?: string | LangFnParameters;
+  actionText?: string | RegularLangFnParameters;
   action?: CallbackAction | CallbackAction[];
   className?: string;
   duration?: number;
diff --git a/src/util/localization/index.ts b/src/util/localization/index.ts
index 8d07fc74c..4525790f4 100644
--- a/src/util/localization/index.ts
+++ b/src/util/localization/index.ts
@@ -10,6 +10,7 @@ import type { LangKey, LangVariable } from '../../types/language';
 import {
   type AdvancedLangFnOptions,
   type AdvancedLangFnOptionsWithPlural,
+  type AdvancedLangFnParameters,
   areAdvancedLangFnOptions,
   isDeletedLangString,
   isPluralLangString,
@@ -18,6 +19,7 @@ import {
   type LangFnOptionsWithPlural,
   type LangFnParameters,
   type LangFormatters,
+  type RegularLangFnParameters,
 } from './types';
 
 import { DEBUG, LANG_PACK } from '../../config';
@@ -440,4 +442,6 @@ export {
 export type {
   LangFn,
   LangFnParameters,
+  RegularLangFnParameters,
+  AdvancedLangFnParameters,
 };
diff --git a/src/util/localization/types.ts b/src/util/localization/types.ts
index 6d74bfc2e..89fee27f4 100644
--- a/src/util/localization/types.ts
+++ b/src/util/localization/types.ts
@@ -73,7 +73,7 @@ type RegularLangFnPluralParametersWithVariables<T = LangPairPluralWithVariables>
   }
 }[keyof T];
 
-type RegularLangFnParameters =
+export type RegularLangFnParameters =
 | RegularLangFnParametersWithoutVariables
 | RegularLangFnParametersWithVariables
 | RegularLangFnPluralParameters
@@ -107,7 +107,7 @@ type AdvancedLangFnPluralParametersWithVariables<T = LangPairPluralWithNodes> =
   }
 }[keyof T];
 
-type AdvancedLangFnParameters =
+export type AdvancedLangFnParameters =
 | AdvancedLangFnParametersWithoutVariables
 | AdvancedLangFnParametersWithVariables
 | AdvancedLangFnPluralParameters