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
@@ -973,10 +973,9 @@
     name: threadInfo.name,
     display: 'uiName',
     uiName: memberEntities,
-    ifJustViewer:
-      threadInfo.type === threadTypes.GENESIS_PRIVATE
-        ? 'viewer_username'
-        : 'just_you_string',
+    ifJustViewer: threadTypeIsPrivate(threadInfo.type)
+      ? 'viewer_username'
+      : 'just_you_string',
   };
 }