diff --git a/railties/lib/rails/generators/rails/app/templates/app/views/layouts/application.html.erb.tt b/railties/lib/rails/generators/rails/app/templates/app/views/layouts/application.html.erb.tt
index 262a21f24f..cff6ba7a9f 100644
--- a/railties/lib/rails/generators/rails/app/templates/app/views/layouts/application.html.erb.tt
+++ b/railties/lib/rails/generators/rails/app/templates/app/views/layouts/application.html.erb.tt
@@ -2,6 +2,7 @@
 <html>
   <head>
     <title><%= camelized %></title>
+    <meta name="viewport" content="width=device-width,initial-scale=1">
     <%%= csrf_meta_tags %>
     <%%= csp_meta_tag %>
 
