diff --git a/lib/vendor/pclzip/pclzip/pclzip.lib.php b/lib/vendor/pclzip/pclzip/pclzip.lib.php
index 78fcf05a8f..3a59a1a943 100644
--- a/lib/vendor/pclzip/pclzip/pclzip.lib.php
+++ b/lib/vendor/pclzip/pclzip/pclzip.lib.php
@@ -1793,13 +1793,16 @@ class PclZip
 
         if ($last == 'g') {
             //$v_memory_limit = $v_memory_limit*1024*1024*1024;
+            $v_memory_limit = str_replace(array('g', 'G'), '', $v_memory_limit);
             $v_memory_limit = $v_memory_limit * 1073741824;
         }
         if ($last == 'm') {
             //$v_memory_limit = $v_memory_limit*1024*1024;
+            $v_memory_limit = str_replace(array('m', 'M'), '', $v_memory_limit);
             $v_memory_limit = $v_memory_limit * 1048576;
         }
         if ($last == 'k') {
+            $v_memory_limit = str_replace(array('k', 'K'), '', $v_memory_limit);
             $v_memory_limit = $v_memory_limit * 1024;
         }