diff --git a/damus/ContentParsing.swift b/damus/ContentParsing.swift
index ebae2112..ad264142 100644
--- a/damus/ContentParsing.swift
+++ b/damus/ContentParsing.swift
@@ -83,7 +83,7 @@ func interpret_event_refs_ndb(blocks: [Block], tags: TagsSequence) -> [EventRef]
     
     /// simpler case with no mentions
     if mention_indices.count == 0 {
-        let ev_refs = References(tags: tags).ids()
+        let ev_refs = References.ids(tags: tags)
         return interp_event_refs_without_mentions_ndb(ev_refs)
     }
     
diff --git a/damus/Nostr/ReferencedId.swift b/damus/Nostr/ReferencedId.swift
index 096c9462..612e1c56 100644
--- a/damus/Nostr/ReferencedId.swift
+++ b/damus/Nostr/ReferencedId.swift
@@ -39,12 +39,12 @@ struct References: Sequence, IteratorProtocol {
     }
 
 
-    func ids() -> LazyFilterSequence<References> {
+    static func ids(tags: TagsSequence) -> LazyFilterSequence<References> {
         References(tags: tags).lazy
             .filter() { ref in ref.key == "e" }
     }
 
-    func pubkeys() -> LazyFilterSequence<References> {
+    static func pubkeys(tags: TagsSequence) -> LazyFilterSequence<References> {
         References(tags: tags).lazy
             .filter() { ref in ref.key == "p" }
     }
diff --git a/nostrdb/NdbNote.swift b/nostrdb/NdbNote.swift
index c54670bc..b8d1c7fa 100644
--- a/nostrdb/NdbNote.swift
+++ b/nostrdb/NdbNote.swift
@@ -168,11 +168,11 @@ extension NdbNote {
 
     // TODO: References iterator
     public var referenced_ids: LazyFilterSequence<References> {
-        References(tags: self.tags()).ids()
+        References.ids(tags: self.tags())
     }
 
     public var referenced_pubkeys: LazyFilterSequence<References> {
-        References(tags: self.tags()).pubkeys()
+        References.pubkeys(tags: self.tags())
     }
 
     func event_refs(_ privkey: String?) -> [EventRef] {