diff --git a/cli.php b/cli.php
index f71378c..9abe279 100644
--- a/cli.php
+++ b/cli.php
@@ -199,6 +199,7 @@ class cli
       $keyStdIn = reset ($tab);
       $dataStdIn = file_get_contents ("php://stdin");
       $argv[$keyStdIn] = $dataStdIn;
+      unset ($keyStdIn);
     }
 
     // Convert "toto=ror&ypyp=oo" arg to array("toto"=>"ror","ypyp"=>"oo")
@@ -206,7 +207,7 @@ class cli
     foreach ($argv as $key=>$arg)
     {
       // Don't modify the stdin
-      if ($key === $keyStdIn)
+      if (isset ($keyStdIn) && $key === $keyStdIn)
         continue;
       $pairs = explode('&', $arg);