diff --git a/archiv/endpoint_views.py b/archiv/endpoint_views.py
index a62bd5d..92364e3 100644
--- a/archiv/endpoint_views.py
+++ b/archiv/endpoint_views.py
@@ -163,7 +163,7 @@ def render_to_response(self, context, **kwargs):
                     if kw_id in node_ids:
                         data["edges"].append(
                             {
-                                "id": f"autor_{x.id}__keyword_{e.id}",
+                                "key": f"autor_{x.id}__keyword_{e.id}",
                                 "source": f"autor_{x.id}",
                                 "target": kw_id,
                             }