diff --git a/modules/identity/src/Volo.Abp.Identity.Application/Volo/Abp/Identity/IdentityUserAppService.cs b/modules/identity/src/Volo.Abp.Identity.Application/Volo/Abp/Identity/IdentityUserAppService.cs
index 69fae63d71..83734be8e5 100644
--- a/modules/identity/src/Volo.Abp.Identity.Application/Volo/Abp/Identity/IdentityUserAppService.cs
+++ b/modules/identity/src/Volo.Abp.Identity.Application/Volo/Abp/Identity/IdentityUserAppService.cs
@@ -40,6 +40,11 @@ namespace Volo.Abp.Identity
         [Authorize(IdentityPermissions.Users.Default)]
         public virtual async Task<PagedResultDto<IdentityUserDto>> GetListAsync(GetIdentityUsersInput input)
         {
+            if (input.Sorting.IsNullOrWhiteSpace())
+            {
+                input.Sorting = nameof(IdentityUser.Name);
+            }
+
             var count = await UserRepository.GetCountAsync(input.Filter);
             var list = await UserRepository.GetListAsync(input.Sorting, input.MaxResultCount, input.SkipCount, input.Filter);
 
diff --git a/modules/tenant-management/src/Volo.Abp.TenantManagement.Application/Volo/Abp/TenantManagement/TenantAppService.cs b/modules/tenant-management/src/Volo.Abp.TenantManagement.Application/Volo/Abp/TenantManagement/TenantAppService.cs
index 575aa1eb0c..b2cdb89b59 100644
--- a/modules/tenant-management/src/Volo.Abp.TenantManagement.Application/Volo/Abp/TenantManagement/TenantAppService.cs
+++ b/modules/tenant-management/src/Volo.Abp.TenantManagement.Application/Volo/Abp/TenantManagement/TenantAppService.cs
@@ -34,6 +34,11 @@ namespace Volo.Abp.TenantManagement
 
         public virtual async Task<PagedResultDto<TenantDto>> GetListAsync(GetTenantsInput input)
         {
+            if (input.Sorting.IsNullOrWhiteSpace())
+            {
+                input.Sorting = nameof(Tenant.Name);
+            }
+
             var count = await TenantRepository.GetCountAsync(input.Filter);
             var list = await TenantRepository.GetListAsync(
                 input.Sorting,