diff --git a/extend/base/helper.php b/extend/base/helper.php
index a1b0875..d16b4a5 100644
--- a/extend/base/helper.php
+++ b/extend/base/helper.php
@@ -426,18 +426,23 @@ function parse_bytes($size)
         case 'b':
             break;
         case 'k':
+        case 'kb':
             $size *= 1024;
             break;
-        case'm':
+        case 'm':
+        case 'mb':
             $size *= 1024 * 1024;
             break;
         case 'g':
+        case 'gb':
             $size *= 1024 * 1024 * 1024;
             break;
         case 't':
+        case 'tb':
             $size *= 1024 * 1024 * 1024 * 1024;
             break;
         case 'p':
+        case 'pb':
             $size *= 1024 * 1024 * 1024 * 1024 * 1024;
             break;
         default: