diff --git a/lib/shared/thread-utils.js b/lib/shared/thread-utils.js
--- a/lib/shared/thread-utils.js
+++ b/lib/shared/thread-utils.js
@@ -938,8 +938,8 @@
 }
 
 function threadFrozenDueToViewerBlock(
-  threadInfo: RawThreadInfo | ThreadInfo,
-  communityThreadInfo: ?(RawThreadInfo | ThreadInfo),
+  threadInfo: ThreadInfo,
+  communityThreadInfo: ?ThreadInfo,
   viewerID: ?string,
   userInfos: UserInfos,
 ): boolean {