diff --git a/lib/js_locale_helper.rb b/lib/js_locale_helper.rb
index 0e090e019..6642a0dfd 100644
--- a/lib/js_locale_helper.rb
+++ b/lib/js_locale_helper.rb
@@ -8,7 +8,7 @@ module JsLocaleHelper
     # load plugins translations
     plugin_translations = {}
     Dir["#{Rails.root}/plugins/*/config/locales/client.#{locale_str}.yml"].each do |file|
-      plugin_translations.merge! YAML::load(File.open(file))
+      plugin_translations.deep_merge! YAML::load(File.open(file))
     end
     # merge translations (plugin translations overwrite default translations)
     translations[locale_str]['js'].deep_merge!(plugin_translations[locale_str]['js']) if translations[locale_str] && plugin_translations[locale_str] && plugin_translations[locale_str]['js']