1 files changed, 2 insertions, 2 deletions
diff --git a/nuldoc-src/commands/build.ts b/nuldoc-src/commands/build.ts
index 734f520..8765802 100644
--- a/nuldoc-src/commands/build.ts
+++ b/nuldoc-src/commands/build.ts
@@ -117,8 +117,8 @@ function collectTags(posts: Document[]): [string, Document[]][] {
     result.push([
       tag,
       tagsAndPosts.get(tag).sort((a: Document, b: Document) => {
-        const ta = a.revisions[0].date;
-        const tb = b.revisions[0].date;
+        const ta = a.getCreatedDate();
+        const tb = b.getCreatedDate();
         if (ta > tb) return -1;
         if (ta < tb) return 1;
         return 0;