diff --git a/application/ConstructionConsent/ConstructionConsentController.php b/application/ConstructionConsent/ConstructionConsentController.php
index d40fb57b5..8ceaed952 100644
--- a/application/ConstructionConsent/ConstructionConsentController.php
+++ b/application/ConstructionConsent/ConstructionConsentController.php
@@ -257,7 +257,7 @@ class ConstructionConsentController extends mfBaseController {
 
         $data = [];
         $data["constructionconsentproject_id"] = $r->constructionconsentproject_id;
-        $data["netzgebiet_id"] = $r->netzgebiet_id;
+        $data["netzgebiet_id"] = (isset($r->netzgebiet_id) && is_int($r->netzgebiet_id)) ? $r->netzgebiet_id : null;
         $data["object_type"] = $r->object_type;
         $data["name"] = $r->name;
         $data["adb_hausnummer_id"] = $r->adb_hausnummer_id;