diff --git a/cli.php b/cli.php
index 47b66fb..9a4056a 100644
--- a/cli.php
+++ b/cli.php
@@ -195,7 +195,8 @@ class cli
       die ("Not enough parameters provided to method\n");
     if (in_array ("-", $argv))
     {
-      $key = reset (array_keys ($argv, "-"));
+      $tab = array_keys ($argv, "-");
+      $key = reset ($tab);
       $argv[$key] = file_get_contents ("php://stdin");
     }