diff --git a/web-v2/src/pages/FieldBriefingsPage.tsx b/web-v2/src/pages/FieldBriefingsPage.tsx
index c409320..25700df 100644
--- a/web-v2/src/pages/FieldBriefingsPage.tsx
+++ b/web-v2/src/pages/FieldBriefingsPage.tsx
@@ -105,7 +105,8 @@ export function FieldBriefingsPage() {
       const all = [...planned.data, ...drafts.data]
         .sort((a, b) => String(a.plannedStartAt ?? '').localeCompare(String(b.plannedStartAt ?? '')));
       setVisits(all);
-      if (all.length === 1) setVisitId(all[0].id);
+      const onlyVisit = all[0];
+      if (all.length === 1 && onlyVisit) setVisitId(onlyVisit.id);
     }).catch((cause) => setError(cause instanceof Error ? cause.message : String(cause)))
       .finally(() => setLoadingVisits(false));
   }, []);