diff --git a/lib/types/thread-types.js b/lib/types/thread-types.js
--- a/lib/types/thread-types.js
+++ b/lib/types/thread-types.js
@@ -191,8 +191,6 @@
     pinnedCount: t.maybe(t.Number),
   });
 
-export type ThreadInfo = LegacyThreadInfo | MinimallyEncodedThreadInfo;
-
 export type LegacyResolvedThreadInfo = {
   +id: string,
   +type: ThreadType,
@@ -417,7 +415,7 @@
 };
 
 export type SidebarInfo = {
-  +threadInfo: ThreadInfo,
+  +threadInfo: LegacyThreadInfo | MinimallyEncodedThreadInfo,
   +lastUpdatedTime: number,
   +mostRecentNonLocalMessage: ?string,
 };
@@ -504,6 +502,6 @@
 };
 
 export type UserProfileThreadInfo = {
-  +threadInfo: ThreadInfo,
+  +threadInfo: LegacyThreadInfo | MinimallyEncodedThreadInfo,
   +pendingPersonalThreadUserInfo?: UserInfo,
 };