diff --git a/CRM/Report/Utils/Report.php b/CRM/Report/Utils/Report.php
index 9bd425d70902..629eafad8123 100644
--- a/CRM/Report/Utils/Report.php
+++ b/CRM/Report/Utils/Report.php
@@ -245,6 +245,11 @@ public static function makeCsv(&$form, &$rows) {
     $config = CRM_Core_Config::singleton();
     $csv = '';
 
+    // Add BOM for additional compatibility with Excel 2007 SP3 or more
+    // cf. http://stackoverflow.com/questions/155097/microsoft-excel-mangles-diacritics-in-csv-files
+    // and http://www.unicode.org/faq/utf_bom.html#bom1
+    $csv .= "\xEF\xBB\xBF";
+
     // Add headers if this is the first row.
     $columnHeaders = array_keys($form->_columnHeaders);