diff --git a/plugins/permission-common/src/PermissionClient.ts b/plugins/permission-common/src/PermissionClient.ts
index edc5093ae8..830c5c6b32 100644
--- a/plugins/permission-common/src/PermissionClient.ts
+++ b/plugins/permission-common/src/PermissionClient.ts
@@ -62,7 +62,10 @@ const authorizePermissionResponseSchema: z.ZodSchema<AuthorizePermissionResponse
 
 const authorizePermissionResponseBatchSchema = z.object({
   result: z.array(
-    z.literal(AuthorizeResult.ALLOW).or(z.literal(AuthorizeResult.DENY)),
+    z.union([
+      z.literal(AuthorizeResult.ALLOW),
+      z.literal(AuthorizeResult.DENY),
+    ]),
   ),
 });
 
diff --git a/plugins/permission-node/src/integration/createPermissionIntegrationRouter.ts b/plugins/permission-node/src/integration/createPermissionIntegrationRouter.ts
index 0d74f8eca5..78cf619206 100644
--- a/plugins/permission-node/src/integration/createPermissionIntegrationRouter.ts
+++ b/plugins/permission-node/src/integration/createPermissionIntegrationRouter.ts
@@ -536,11 +536,7 @@ export function createPermissionIntegrationRouter<
           requestedType,
           requests
             .filter(r => r.resourceType === requestedType)
-            .map(i =>
-              typeof i.resourceRef === 'string'
-                ? [i.resourceRef]
-                : i.resourceRefs,
-            )
+            .map(i => i.resourceRefs ?? [i.resourceRef])
             .flat(),
         );
       }