diff --git a/src/components/Clustering.jsx b/src/components/Clustering.jsx
index 420dca42a..aff81c788 100644
--- a/src/components/Clustering.jsx
+++ b/src/components/Clustering.jsx
@@ -146,7 +146,7 @@ function Clustering({ category, children }) {
     <>
       <GeoJSON ref={featureRef} data={null} pointToLayer={createClusterIcon} />
       {children.length > rules.forcedLimit || userCluster
-        ? children.filter((x) => markers.has(x.key))
+        ? children.filter((x) => x && markers.has(x.key))
         : children}
       {limitHit && (
         <Notification