diff --git a/contrib/html.sh b/contrib/html.sh
index aafe5a2..69c0dba 100755
--- a/contrib/html.sh
+++ b/contrib/html.sh
@@ -9,6 +9,6 @@ sed \
 	-e "s|__LOGO__|$(realpath --relative-to="${RELTO}" logo.png)|" \
 	< "${0}.d/head.html"
 markdown -f toc,idanchor "${1}" | sed \
-	-e 's/href="\([-_\./[:alnum:]]*\)\.md"/href="\1.html"/g' \
+	-e 's/href="\([-_\./[:alnum:]]*\)\.md\(#[-[:alnum:]]*\)\?"/href="\1.html\2"/g' \
 	-e '/<h[1234] /s| id="\(.*\)">| id="\L\1">|'
 printf '</body></html>'