diff --git a/core/src/Revolution/Transport/modTransportPackage.php b/core/src/Revolution/Transport/modTransportPackage.php
index 54fb14be3c3..e0d6fe69c8f 100644
--- a/core/src/Revolution/Transport/modTransportPackage.php
+++ b/core/src/Revolution/Transport/modTransportPackage.php
@@ -747,7 +747,14 @@ public function findResolution($package, $constraint, &$provider = null)
     protected function _bytes($value)
     {
         $value = trim($value);
-        $modifier = strtolower($value[strlen($value) - 1]);
+        $modifiers = ['g', 'm', 'k'];
+        $lastChar = substr($value, -1);
+        $modifier = strtolower($lastChar);
+        if (!in_array($modifier, $modifiers)) {
+            return (int)$value;
+        }
+        $value = (int)rtrim($value, $lastChar);
+
         switch ($modifier) {
             case 'g':
                 $value *= 1024;