diff --git a/CHANGELOG b/CHANGELOG
index 06b20698e..bb1be36a5 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -332,6 +332,7 @@
 - add hook displayPreviewThumb
 - add searching for mimetype in database
 - list of expired documents can be filtered by user
+- use quoted printable encoding instead of base64 for email subjects
 
 --------------------------------------------------------------------------------
                      Changes in version 5.1.39
diff --git a/inc/inc.ClassEmailNotify.php b/inc/inc.ClassEmailNotify.php
index 6369c616b..bf362c59d 100644
--- a/inc/inc.ClassEmailNotify.php
+++ b/inc/inc.ClassEmailNotify.php
@@ -205,7 +205,7 @@ class SeedDMS_EmailNotify extends SeedDMS_Notify {
 		if($returnpath)
 			$headers['Return-Path'] = $returnpath;
 		$headers['To'] = $to;
-		$preferences = array("input-charset" => "UTF-8", "output-charset" => "UTF-8");
+		$preferences = array("input-charset" => "UTF-8", "output-charset" => "UTF-8", "scheme"=>"Q");
 		$encoded_subject = iconv_mime_encode("Subject", getMLText($subject, $params, null, $lang), $preferences);
 		$headers['Subject'] = substr($encoded_subject, strlen('Subject: '));
 		$headers['Date'] = date('r', time());