From 85a59c632daec0dad1c6066b51f61402aef5108c Mon Sep 17 00:00:00 2001
From: Neil Lalonde <neillalonde@gmail.com>
Date: Tue, 5 Dec 2017 15:12:18 -0500
Subject: [PATCH] allow header_instructions to be passed in to message builder

---
 lib/email/message_builder.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/email/message_builder.rb b/lib/email/message_builder.rb
index c72d7bca9ea..9bc9cfd5dd5 100644
--- a/lib/email/message_builder.rb
+++ b/lib/email/message_builder.rb
@@ -30,7 +30,7 @@ module Email
       }.merge!(@opts)
 
       if @template_args[:url].present?
-        @template_args[:header_instructions] = I18n.t('user_notifications.header_instructions', @template_args)
+        @template_args[:header_instructions] ||= I18n.t('user_notifications.header_instructions', @template_args)
 
         if @opts[:include_respond_instructions] == false
           @template_args[:respond_instructions] = ''