diff --git a/app/statistics/prisma.ts b/app/statistics/prisma.ts
index 9f51009131..a83b642fa8 100644
--- a/app/statistics/prisma.ts
+++ b/app/statistics/prisma.ts
@@ -214,7 +214,7 @@ export const fetchChartsMetadata = async () => {
     WHERE NOT EXISTS (
       SELECT 1
       FROM jsonb_array_elements_text(iris) AS iri
-      WHERE NOT (iri LIKE 'http://%' OR iri LIKE 'https://%')
+      WHERE iri IS NULL OR NOT (iri LIKE 'http://%' OR iri LIKE 'https://%')
     );
   `.then((rows) => {
     return rows.map((row) => ({