diff --git a/packages/firestore/src/remote/rest_connection.ts b/packages/firestore/src/remote/rest_connection.ts
index e39852707cc..a3cd1e3eace 100644
--- a/packages/firestore/src/remote/rest_connection.ts
+++ b/packages/firestore/src/remote/rest_connection.ts
@@ -122,7 +122,7 @@ export abstract class RestConnection implements Connection {
     // Content-Type: text/plain will avoid preflight requests which might
     // mess with CORS and redirects by proxies. If we add custom headers
     // we will need to change this code to potentially use the $httpOverwrite
-    // parameter supported by ESF to avoid	triggering preflight requests.
+    // parameter supported by ESF to avoid triggering preflight requests.
     headers['Content-Type'] = 'text/plain';
 
     if (token) {