diff --git a/libcmark-gfm/libcmark-gfm/src/html.c b/libcmark-gfm/libcmark-gfm/src/html.c
index 12d3c3e..f662aa3 100644
--- a/libcmark-gfm/libcmark-gfm/src/html.c
+++ b/libcmark-gfm/libcmark-gfm/src/html.c
@@ -66,7 +66,7 @@ static bool S_put_footnote_backref(cmark_html_renderer *renderer, cmark_strbuf *
cmark_strbuf_puts(html, "as.literal.data, node->as.literal.len);
- cmark_strbuf_puts(html, "\" class=\"footnote-backref\" data-footnote-backref aria-label=\"Back to content\">↩");
+ cmark_strbuf_puts(html, "\" class=\"footnote-backref\" data-footnote-backref=\"\" aria-label=\"Back to content\">↩");
if (node->footnote.def_count > 1)
{
@@ -78,7 +78,7 @@ static bool S_put_footnote_backref(cmark_html_renderer *renderer, cmark_strbuf *
houdini_escape_href(html, node->as.literal.data, node->as.literal.len);
cmark_strbuf_puts(html, "-");
cmark_strbuf_puts(html, n);
- cmark_strbuf_puts(html, "\" class=\"footnote-backref\" data-footnote-backref aria-label=\"Back to content\">↩");
}