diff --git a/site/layouts/_default/list.opensearch.xml b/site/layouts/_default/list.opensearch.xml
index a64e0daeec..15258eb652 100644
--- a/site/layouts/_default/list.opensearch.xml
+++ b/site/layouts/_default/list.opensearch.xml
@@ -2,6 +2,7 @@
 <OpenSearchDescription xmlns="http://a9.com/-/spec/opensearch/1.1/" xmlns:moz="http://www.mozilla.org/2006/browser/search/">
   <ShortName>{{ .Site.Title }}</ShortName>
   <Description>Search {{ .Site.Title }} documentation</Description>
+  <InputEncoding>UTF-8</InputEncoding>
   <Image type="image/x-icon" width="16" height="16">{{ (printf "/docs/%s/assets/img/favicons/favicon.ico" .Site.Params.docs_version) | absURL }}</Image>
   <Url type="text/html" method="get" template="{{ (printf "/docs/%s/getting-started/introduction/" .Site.Params.docs_version) | absURL }}#search={searchTerms}"/>
 </OpenSearchDescription>