diff --git a/damus/Models/MutedThreadsManager.swift b/damus/Models/MutedThreadsManager.swift
index 1b0303a0..5845ccc2 100644
--- a/damus/Models/MutedThreadsManager.swift
+++ b/damus/Models/MutedThreadsManager.swift
@@ -24,7 +24,8 @@ func saveMutedThreads(pubkey: Pubkey, currentValue: [NoteId], value: [NoteId]) -
     let uniqueMutedThreads = Array(Set(value))
 
     if uniqueMutedThreads != currentValue {
-        UserDefaults.standard.set(uniqueMutedThreads, forKey: getMutedThreadsKey(pubkey: pubkey))
+        let ids = uniqueMutedThreads.map { note_id in return note_id.hex() }
+        UserDefaults.standard.set(ids, forKey: getMutedThreadsKey(pubkey: pubkey))
         return true
     }