diff --git a/src/helpers/useDataSource.js b/src/helpers/useDataSource.js
index a57f69d..002951c 100644
--- a/src/helpers/useDataSource.js
+++ b/src/helpers/useDataSource.js
@@ -6,6 +6,7 @@ function useDataSource(data, defaultSources) {
   const [dataSource, setDataSource] = useState(null);
   useEffect(() => {
     if (!data) {
+      setDataSource(null);
       return;
     }
     let url = null;