diff --git a/etemplate/inc/class.bo_merge.inc.php b/etemplate/inc/class.bo_merge.inc.php
index c8c3f61d3d..bc06ef0daa 100644
--- a/etemplate/inc/class.bo_merge.inc.php
+++ b/etemplate/inc/class.bo_merge.inc.php
@@ -851,6 +851,7 @@ abstract class bo_merge
 		switch($_mimetype)
 		{
 			case 'application/xml':	// Excel 2003
+			case 'application/vnd.oasis.opendocument.spreadsheet': // OO.o spreadsheet
 				return number_format(str_replace(' ','',$number),$num_decimal_places,'.','');
 		}
 		return etemplate::number_format($number,$num_decimal_places);