diff --git a/manage-i18n.sh b/manage-i18n.sh
index e95cdf7..d0730d7 100755
--- a/manage-i18n.sh
+++ b/manage-i18n.sh
@@ -31,7 +31,7 @@ for plugin in $(find . -name setup.py -exec sh -c 'basename $(dirname $0)' {} \;
         TRANSLATIONS_DIR="./indico_${plugin}/translations"
         [[ ! -d "$TRANSLATIONS_DIR" ]] && mkdir "$TRANSLATIONS_DIR"
         pybabel extract -o "${TRANSLATIONS_DIR}/messages.pot" "indico_${plugin}" -F ../babel.cfg
-        pybabel extract -o "${TRANSLATIONS_DIR}/messages-js.pot" "indico_${plugin}" -k 'gettext' -k 'ngettext' -k '$T' -F ../babel-js.cfg
+        pybabel extract -o "${TRANSLATIONS_DIR}/messages-js.pot" "indico_${plugin}" -k 'gettext' -k 'ngettext:1,2' -k '$T' -F ../babel-js.cfg
     elif [[ "$ACTION" == "update" ]]; then
         require_locale
         pybabel update -i "./indico_${plugin}/translations/messages.pot" -l "$LOCALE" -d "./indico_${plugin}/translations"