diff --git a/Immocaster/Immobilienscout/Rest.php b/Immocaster/Immobilienscout/Rest.php
index 6e7a15f..4076b65 100755
--- a/Immocaster/Immobilienscout/Rest.php
+++ b/Immocaster/Immobilienscout/Rest.php
@@ -1,5 +1,9 @@
 <?php
-session_start();
+
+if (session_status() == PHP_SESSION_NONE) {
+    session_start();
+}
+
 /**
  * ImmobilienScout24 PHP-SDK
  *  Nutzung der ImmobilienScout24 API per REST.