diff --git a/medias_fonctions.php b/medias_fonctions.php
index a67c97d4aa16ffd05e9729705d2e59ccf2b5a939..0dd49808c1fbfde887de89bdd88e828a08b772c2 100644
--- a/medias_fonctions.php
+++ b/medias_fonctions.php
@@ -44,6 +44,7 @@ if (isset($GLOBALS['visiteur_session']['zip_to_clean'])
 if (isset($_SERVER['REQUEST_METHOD'])
 	and $_SERVER['REQUEST_METHOD'] == 'POST'
 	and empty($_POST)
+    and isset($_SERVER['CONTENT_TYPE'])
 	and strlen($_SERVER['CONTENT_TYPE']) > 0
 	and strncmp($_SERVER['CONTENT_TYPE'], 'multipart/form-data', 19) == 0
 	and $_SERVER['CONTENT_LENGTH'] > medias_inigetoctets('post_max_size')