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-rw-r--r--public/js/extra.js2
1 files changed, 1 insertions, 1 deletions
diff --git a/public/js/extra.js b/public/js/extra.js
index 810d6146..23944a17 100644
--- a/public/js/extra.js
+++ b/public/js/extra.js
@@ -909,7 +909,7 @@ export function deduplicatedHeaderId (view) {
// all headers contained in the document, in order of appearance
const allHeaders = view.find(`:header`).toArray()
// list of finaly assigned header IDs
- let headerIds = new Set()
+ const headerIds = new Set()
for (let j = 0; j < allHeaders.length; j++) {
const $header = $(allHeaders[j])
const id = $header.attr('id')