diff --git a/components/common/WorldMap.js b/components/common/WorldMap.js
index b5a40fc5..c6aa91ab 100644
--- a/components/common/WorldMap.js
+++ b/components/common/WorldMap.js
@@ -27,7 +27,7 @@ function WorldMap({ data, className }) {
   );
   const { locale } = useLocale();
   const countryNames = useCountryNames(locale);
-  const metrics = useMemo(() => percentFilter(data), [data]);
+  const metrics = useMemo(() => (data ? percentFilter(data) : []), [data]);
 
   function getFillColor(code) {
     if (code === 'AQ') return;