diff --git a/react/features/subtitles/middleware.ts b/react/features/subtitles/middleware.ts
index 07a29e8a6db..85c8c8b8137 100644
--- a/react/features/subtitles/middleware.ts
+++ b/react/features/subtitles/middleware.ts
@@ -13,6 +13,7 @@ import {
     updateTranscriptMessage
 } from './actions.any';
 import { notifyTranscriptionChunkReceived } from './functions';
+import { ITranscriptMessage } from './types';
 
 
 /**
@@ -188,9 +189,8 @@ function _endpointMessageReceived(store: IStore, next: Function, action: AnyActi
         // message ID or adds a new transcript message if it does not
         // exist in the map.
         const existingMessage = state['features/subtitles']._transcriptMessages.get(transcriptMessageID);
-        const newTranscriptMessage: any = {
+        const newTranscriptMessage: ITranscriptMessage = {
             clearTimeOut: existingMessage?.clearTimeOut,
-            language,
             participant
         };
 
diff --git a/react/features/subtitles/reducer.ts b/react/features/subtitles/reducer.ts
index 44e07aeed6c..1a679a14e76 100644
--- a/react/features/subtitles/reducer.ts
+++ b/react/features/subtitles/reducer.ts
@@ -6,6 +6,7 @@ import {
     TOGGLE_REQUESTING_SUBTITLES,
     UPDATE_TRANSCRIPT_MESSAGE
 } from './actionTypes';
+import { ITranscriptMessage } from './types';
 
 /**
  * Default State for 'features/transcription' feature.
@@ -17,18 +18,11 @@ const defaultState = {
     _language: null
 };
 
-interface ITranscriptMessage {
-    final: string;
-    participantName: string;
-    stable: string;
-    unstable: string;
-}
-
 export interface ISubtitlesState {
     _displaySubtitles: boolean;
     _language: string | null;
     _requestingSubtitles: boolean;
-    _transcriptMessages: Map<string, ITranscriptMessage> | any;
+    _transcriptMessages: Map<string, ITranscriptMessage>;
 }
 
 /**
diff --git a/react/features/subtitles/types.ts b/react/features/subtitles/types.ts
new file mode 100644
index 00000000000..fe672940371
--- /dev/null
+++ b/react/features/subtitles/types.ts
@@ -0,0 +1,11 @@
+export interface ITranscriptMessage {
+    clearTimeOut?: number;
+    final?: string;
+    participant: {
+        avatarUrl?: string;
+        id?: string;
+        name?: string;
+    };
+    stable?: string;
+    unstable?: string;
+}