diff --git a/app/models/post_action.rb b/app/models/post_action.rb
index 4c7cec96f90..3ac3d5d02a0 100644
--- a/app/models/post_action.rb
+++ b/app/models/post_action.rb
@@ -213,8 +213,8 @@ SQL
 
     return unless opts[:message] && [:notify_moderators, :notify_user, :spam].include?(post_action_type)
 
-    title = I18n.t("post_action_types.#{post_action_type}.email_title", title: post.topic.title)
-    body = I18n.t("post_action_types.#{post_action_type}.email_body", message: opts[:message], link: "#{Discourse.base_url}#{post.url}")
+    title = I18n.t("post_action_types.#{post_action_type}.email_title", title: post.topic.title, locale: SiteSetting.default_locale)
+    body = I18n.t("post_action_types.#{post_action_type}.email_body", message: opts[:message], link: "#{Discourse.base_url}#{post.url}", locale: SiteSetting.default_locale)
     warning = opts[:is_warning] if opts[:is_warning].present?
     title = title.truncate(255, separator: /\s/)