diff --git a/quickpeep_indexer/src/bin/qp-indexer.rs b/quickpeep_indexer/src/bin/qp-indexer.rs
index b81d6c6..7993228 100644
--- a/quickpeep_indexer/src/bin/qp-indexer.rs
+++ b/quickpeep_indexer/src/bin/qp-indexer.rs
@@ -108,7 +108,7 @@ pub fn handle_page_pack(
     let article_body = DenseTree::generate_textual_format(&document.body_content, false);
     let nonarticle_body = DenseTree::generate_textual_format(&document.body_remainder, false);
 
-    let tags = seed_lookup
+    let mut tags = seed_lookup
         .look_up(&Url::parse(page_record.url.as_ref())?)?
         .map(|seed: &Seed| seed.tags.iter().map(|cs| cs.to_string()).collect())
         .unwrap_or_else(|| Vec::with_capacity(0));