diff --git a/packages/docusaurus-theme-search-algolia/src/index.js b/packages/docusaurus-theme-search-algolia/src/index.js
index ffc015b676..e0988535f2 100644
--- a/packages/docusaurus-theme-search-algolia/src/index.js
+++ b/packages/docusaurus-theme-search-algolia/src/index.js
@@ -60,7 +60,7 @@ function theme(context) {
           renderOpenSearchTemplate({
             title,
             url: url + baseUrl,
-            favicon: normalizeUrl([url, baseUrl, favicon]),
+            favicon: favicon ? normalizeUrl([url, baseUrl, favicon]) : null,
           }),
         );
       } catch (err) {
diff --git a/packages/docusaurus-theme-search-algolia/src/templates/opensearch.js b/packages/docusaurus-theme-search-algolia/src/templates/opensearch.js
index 1284223c7d..75e974f44c 100644
--- a/packages/docusaurus-theme-search-algolia/src/templates/opensearch.js
+++ b/packages/docusaurus-theme-search-algolia/src/templates/opensearch.js
@@ -12,7 +12,9 @@ module.exports = `
   <ShortName><%= it.title %></ShortName>
   <Description>Search <%= it.title %></Description>
   <InputEncoding>UTF-8</InputEncoding>
-  <Image width="16" height="16" type="image/x-icon"><%= it.favicon %></Image>
+  <% if (it.favicon) { _%>
+    <Image width="16" height="16" type="image/x-icon"><%= it.favicon %></Image>
+  <% } _%>
   <Url type="text/html" method="get" template="<%= it.url %>search?q={searchTerms}"/>
   <Url type="application/opensearchdescription+xml" rel="self" template="<%= it.url %>opensearch.xml" />
   <moz:SearchForm><%= it.url %></moz:SearchForm>