diff --git a/ui/src/components/access/AccessFormGcoreConfig.tsx b/ui/src/components/access/AccessFormGcoreConfig.tsx
index 8619f7fe..858dac02 100644
--- a/ui/src/components/access/AccessFormGcoreConfig.tsx
+++ b/ui/src/components/access/AccessFormGcoreConfig.tsx
@@ -28,7 +28,7 @@ const AccessFormGcoreConfig = ({ form: formInst, formName, disabled, initialValu
     apiToken: z
       .string()
       .min(1, t("access.form.gcore_api_token.placeholder"))
-      .max(64, t("common.errmsg.string_max", { max: 64 }))
+      .max(256, t("common.errmsg.string_max", { max: 256 }))
       .trim(),
   });
   const formRule = createSchemaFieldRule(formSchema);