diff --git a/config/application.rb b/config/application.rb
index eb5fdc43d..f132d62ba 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -53,6 +53,11 @@ module RedmineApp
     # Configure the default encoding used in templates for Ruby 1.9.
     config.encoding = "utf-8"
 
+    #disable [deprecated] I18n.enforce_available_locales will default to true in the future.
+    # If you really want to skip validation of your locale you can set I18n.enforce_available_locales = false
+    # to avoid this message.
+    I18n.config.enforce_available_locales = false
+
     # Configure sensitive parameters which will be filtered from the log file.
     config.filter_parameters += [:password]