diff --git a/activesupport/lib/active_support/i18n_railtie.rb b/activesupport/lib/active_support/i18n_railtie.rb
index ac9bca44b6981..23cd6716e3d3e 100644
--- a/activesupport/lib/active_support/i18n_railtie.rb
+++ b/activesupport/lib/active_support/i18n_railtie.rb
@@ -52,7 +52,7 @@ def self.initialize_i18n(app)
 
       init_fallbacks(fallbacks) if fallbacks && validate_fallbacks(fallbacks)
 
-      # Restore avalable locales check so it will take place from now on.
+      # Restore available locales check so it will take place from now on.
       I18n.enforce_available_locales = enforce_available_locales
 
       reloader = ActiveSupport::FileUpdateChecker.new(I18n.load_path.dup){ I18n.reload! }