diff --git a/packages/docusaurus-plugin-google-gtag/src/index.js b/packages/docusaurus-plugin-google-gtag/src/index.js
index 71358b29d212..30d2d611a8da 100644
--- a/packages/docusaurus-plugin-google-gtag/src/index.js
+++ b/packages/docusaurus-plugin-google-gtag/src/index.js
@@ -40,6 +40,7 @@ module.exports = function(context) {
         return {};
       }
       return {
+        // Gtag includes GA by default, so we also preconnect to google-analytics.
         headTags: [
           {
             tagName: 'link',