diff --git a/src/definition/livechat/ILivechatRoom.ts b/src/definition/livechat/ILivechatRoom.ts
index f36288f08..8cfe7059b 100644
--- a/src/definition/livechat/ILivechatRoom.ts
+++ b/src/definition/livechat/ILivechatRoom.ts
@@ -24,7 +24,7 @@ interface IOmnichannelSourceApp {
 }
 type OmnichannelSource =
     | {
-          type: Omit<OmnichannelSourceType, 'app'>;
+          type: Exclude<OmnichannelSourceType, 'app'>;
       }
     | IOmnichannelSourceApp;