diff --git a/packages/router/src/index.ts b/packages/router/src/index.ts
index 8297216..728ec07 100644
--- a/packages/router/src/index.ts
+++ b/packages/router/src/index.ts
@@ -18,19 +18,17 @@ import {
   isOnionUrl,
   isLocalUrl,
   isShareableRelayUrl,
-  COMMENT,
   PROFILE,
   RELAYS,
   INBOX_RELAYS,
   FOLLOWS,
   WRAP,
-  getReplyTags,
-  getCommentTags,
   getPubkeyTagValues,
   normalizeRelayUrl,
   TrustedEvent,
   Filter,
   readList,
+  getAncestorTags,
   asDecryptedEvent,
   getRelaysFromList,
   RelayMode,
@@ -215,8 +213,7 @@ export class Router {
   }
 
   EventAncestors = (event: TrustedEvent, type: "mentions" | "replies" | "roots") => {
-    const ancestorTags =
-      event.kind === COMMENT ? getCommentTags(event.tags) : getReplyTags(event.tags)
+    const ancestorTags = getAncestorTags(event)
 
     const tags: string[][] = (ancestorTags as any)[type] || []
 
diff --git a/packages/util/src/Events.ts b/packages/util/src/Events.ts
index 2881038..a7d9656 100644
--- a/packages/util/src/Events.ts
+++ b/packages/util/src/Events.ts
@@ -2,7 +2,7 @@ import {verifiedSymbol, verifyEvent as verifyEventPure} from "nostr-tools/pure"
 import {setNostrWasm, verifyEvent as verifyEventWasm} from "nostr-tools/wasm"
 import {initNostrWasm} from "nostr-wasm"
 import {mapVals, first, pick, now} from "@welshman/lib"
-import {getReplyTagValues, getCommentTagValues} from "./Tags.js"
+import {getReplyTags, getCommentTags, getReplyTagValues, getCommentTagValues} from "./Tags.js"
 import {getAddress, Address} from "./Address.js"
 import {
   COMMENT,
@@ -145,6 +145,9 @@ export const isPlainReplaceable = (e: EventTemplate) => isPlainReplaceableKind(e
 export const isParameterizedReplaceable = (e: EventTemplate) =>
   isParameterizedReplaceableKind(e.kind)
 
+export const getAncestorTags = ({kind, tags}: EventTemplate) =>
+  kind === COMMENT ? getCommentTags(tags) : getReplyTags(tags)
+
 export const getAncestors = ({kind, tags}: EventTemplate) =>
   kind === COMMENT ? getCommentTagValues(tags) : getReplyTagValues(tags)