diff --git a/upload/source/function/function_attachment.php b/upload/source/function/function_attachment.php
index 78990d3edc5437d611a1b56538af0782bc97cbd7..f316b06c3d96a2ea55da66bab27f376445646a65 100644
--- a/upload/source/function/function_attachment.php
+++ b/upload/source/function/function_attachment.php
@@ -48,7 +48,7 @@ function attachtype($type, $returnval = 'html') {
 			$typeid = 7;
 		} elseif(preg_match("/text|^(txt|rtf|wri|chm)\t/", $type)) {
 			$typeid = 6;
-		} elseif(preg_match("/word|powerpoint|^(doc|ppt)\t/", $type)) {
+		} elseif(preg_match("/word|excel|powerpoint|^(doc|xls|ppt|docx|xlsx|pptx)\t/", $type)) {
 			$typeid = 5;
 		} elseif(preg_match("/^rar\t/", $type)) {
 			$typeid = 4;