diff --git a/railties/lib/rails/engine.rb b/railties/lib/rails/engine.rb
index 579af8c6a5..93504b3b35 100644
--- a/railties/lib/rails/engine.rb
+++ b/railties/lib/rails/engine.rb
@@ -107,7 +107,7 @@ module Rails
   #
   # The <tt>Application</tt> class adds a couple more paths to this set. And as in your
   # <tt>Application</tt>, all folders under +app+ are automatically added to the load path.
-  # If you have an <tt>app/services/tt> folder for example, it will be added by default.
+  # If you have an <tt>app/services</tt> folder for example, it will be added by default.
   #
   # == Endpoint
   #