diff --git a/lib/pclzip/pclzip.class.php b/lib/pclzip/pclzip.class.php
index 2d0e71e7a7..8c8614982f 100644
--- a/lib/pclzip/pclzip.class.php
+++ b/lib/pclzip/pclzip.class.php
@@ -1836,7 +1836,8 @@
     $v_memory_limit = ini_get('memory_limit');
     $v_memory_limit = trim($v_memory_limit);
     $last = strtolower(substr($v_memory_limit, -1));
- 
+
+    $v_memory_limit = (int)$v_memory_limit;
     if($last == 'g')
         //$v_memory_limit = $v_memory_limit*1024*1024*1024;
         $v_memory_limit = $v_memory_limit*1073741824;