diff --git a/app/src/Inspector.tsx b/app/src/Inspector.tsx
index f7f8bb5..b25f360 100644
--- a/app/src/Inspector.tsx
+++ b/app/src/Inspector.tsx
@@ -161,7 +161,7 @@ const FeatureProperties = (props: { feature: Feature }) => {
   const rows = tmp.map((d, i) => (
     <tr key={i}>
       <td>{d[0]}</td>
-      <td>{d[1]}</td>
+      <td>{typeof d[1] === "boolean" ? JSON.stringify(d[1]) : d[1]}</td>
     </tr>
   ));