diff --git a/core/resources/opds2_schema/readium-metadata.schema.json b/core/resources/opds2_schema/readium-metadata.schema.json
index 9b6b3ada4..917957a65 100644
--- a/core/resources/opds2_schema/readium-metadata.schema.json
+++ b/core/resources/opds2_schema/readium-metadata.schema.json
@@ -141,7 +141,7 @@
       "$ref": "https://readium.org/webpub-manifest/schema/extensions/epub/metadata.schema.json"
     },
     {
-      "$ref": "https://readium.org/webpub-manifest/schema/extensions/presentation/metadata.schema.json"
+      "$ref": "https://readium.org/webpub-manifest/schema/experimental/presentation/metadata.schema.json"
     }
   ]
 }