diff --git a/config/environments/development.rb b/config/environments/development.rb
index ad791414c..5feb9d328 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -67,7 +67,7 @@ Rails.application.configure do
   config.assets.quiet = true
 
   # Raises error for missing translations.
-  # config.i18n.raise_on_missing_translations = true
+  config.i18n.raise_on_missing_translations = true
 
   # Annotate rendered view with file names.
   config.action_view.annotate_rendered_view_with_filenames = true
diff --git a/config/environments/test.rb b/config/environments/test.rb
index 4e66cca7a..23fbc89fb 100644
--- a/config/environments/test.rb
+++ b/config/environments/test.rb
@@ -64,7 +64,7 @@ Rails.application.configure do
   config.log_level = :debug
 
   # Raises error for missing translations.
-  # config.i18n.raise_on_missing_translations = true
+  config.i18n.raise_on_missing_translations = true
 
   # Annotate rendered view with file names
   # config.action_view.annotate_rendered_view_with_filenames = true