diff --git a/modules/tenant-management/src/Volo.Abp.TenantManagement.Web/Pages/TenantManagement/Tenants/ConnectionStringsModal.cshtml.cs b/modules/tenant-management/src/Volo.Abp.TenantManagement.Web/Pages/TenantManagement/Tenants/ConnectionStringsModal.cshtml.cs
index a2beeda27d..a4db743263 100644
--- a/modules/tenant-management/src/Volo.Abp.TenantManagement.Web/Pages/TenantManagement/Tenants/ConnectionStringsModal.cshtml.cs
+++ b/modules/tenant-management/src/Volo.Abp.TenantManagement.Web/Pages/TenantManagement/Tenants/ConnectionStringsModal.cshtml.cs
@@ -52,7 +52,7 @@ namespace Volo.Abp.TenantManagement.Web.Pages.TenantManagement.Tenants
 
             public bool UseSharedDatabase { get; set; }
 
-            [StringLength(TenantConnectionStringConsts.MaxNameLength)]
+            [StringLength(TenantConnectionStringConsts.MaxValueLength)]
             public string DefaultConnectionString { get; set; }
         }
     }