diff --git a/drb-c2-core/app/internal/mqtt_handler.py b/drb-c2-core/app/internal/mqtt_handler.py
index c4b9b84..5839385 100644
--- a/drb-c2-core/app/internal/mqtt_handler.py
+++ b/drb-c2-core/app/internal/mqtt_handler.py
@@ -127,10 +127,16 @@ class MQTTHandler:
         status = payload.get("status")
         if not status:
             return
-        await fstore.doc_update("nodes", node_id, {
-            "status": status,
-            "last_seen": datetime.now(timezone.utc).isoformat(),
-        })
+        try:
+            await fstore.doc_update("nodes", node_id, {
+                "status": status,
+                "last_seen": datetime.now(timezone.utc).isoformat(),
+            })
+        except Exception as e:
+            if "No document to update" in str(e):
+                logger.info(f"Status from deleted/unknown node {node_id} — ignoring (no Firestore doc)")
+            else:
+                raise
 
     # ------------------------------------------------------------------
     # Metadata — call_start / call_end events