diff --git a/class/preisbot.class.php b/class/preisbot.class.php
index f8d5861..22c8122 100755
--- a/class/preisbot.class.php
+++ b/class/preisbot.class.php
@@ -54,9 +54,19 @@ class PreisBot
 	{
 		global $conf, $user, $langs;
 
+		// Sicherheits-Timeout: Max 5 Minuten für den gesamten Job
+		@set_time_limit(300);
+
 		try {
 			require_once DOL_DOCUMENT_ROOT.'/product/class/product.class.php';
 
+			// User-Kontext sicherstellen (Cronjob hat manchmal keinen User)
+			if (empty($user) || !is_object($user) || empty($user->id)) {
+				require_once DOL_DOCUMENT_ROOT.'/user/class/user.class.php';
+				$user = new User($this->db);
+				$user->fetch(1); // Admin-User
+			}
+
 			$priceSource = getDolGlobalString('PREISBOT_PRICE_SOURCE', 'cheapest');
 			$priceDirection = getDolGlobalString('PREISBOT_PRICE_DIRECTION', 'up_only');
 			$minMargin = (float) getDolGlobalString('PREISBOT_MIN_MARGIN', 20);