diff --git a/creation_sondage.php b/creation_sondage.php
index fa4fb25..bf39078 100644
--- a/creation_sondage.php
+++ b/creation_sondage.php
@@ -37,7 +37,9 @@
 //
 //==========================================================================
 
-session_start();
+if (session_id() == "") {
+  session_start();
+}
 
 include_once('fonctions.php');