diff --git a/about-slash.html b/about-slash.html
index 98d20d6a68..3038155aa8 100644
--- a/about-slash.html
+++ b/about-slash.html
@@ -32,6 +32,7 @@
apiKey: '3eb9507824b8be89e7a199ecaa1a9d2c',
indexName: 'docusaurus',
- inputSelector: '#search_input_react'
+ inputSelector: '#search_input_react',
+ algoliaOptions: {"facetFilters":["lang:en"]}
});