diff --git a/frontend/src/app/terminal/watchlist/page.tsx b/frontend/src/app/terminal/watchlist/page.tsx
index d94d215..bdf6f91 100755
--- a/frontend/src/app/terminal/watchlist/page.tsx
+++ b/frontend/src/app/terminal/watchlist/page.tsx
@@ -703,7 +703,7 @@ export default function WatchlistPage() {
         isOpen={healthModalOpen}
         onClose={() => setHealthModalOpen(false)}
         domain={selectedDomainData}
-        health={selectedHealth}
+        health={selectedHealth ?? undefined}
         onRefresh={() => selectedDomain && handleHealthCheck(selectedDomain)}
         loading={selectedDomain ? loadingHealth[selectedDomain] || false : false}
       />