diff --git a/todoblue/src/app/[lang]/board/[board]/(page)/(view)/BoardMain.tsx b/todoblue/src/app/[lang]/board/[board]/(page)/(view)/BoardMain.tsx
index f62fa26..96ed4a4 100644
--- a/todoblue/src/app/[lang]/board/[board]/(page)/(view)/BoardMain.tsx
+++ b/todoblue/src/app/[lang]/board/[board]/(page)/(view)/BoardMain.tsx
@@ -54,7 +54,7 @@ export function BoardMain({lang, className, columning, sorting, grouping, setEdi
 		case WebSocket.CLOSED:
 			return <SplashWithIcon
 				icon={<FontAwesomeIcon size={"4x"} icon={faLinkSlash}/>}
-				text={t("boardDisconnected", { retryingInSeconds: Math.ceil(webSocketBackoffMs / 1000).toString() })}
+				text={t("boardDisconnected", { retryingInSeconds: Math.ceil(webSocketBackoffMs ?? 0 / 1000).toString() })}
 				className={className}
 			/>
 	}