diff --git a/FileService/FileServiceProvider.cs b/FileService/FileServiceProvider.cs
index 8a736b7..67dfa63 100644
--- a/FileService/FileServiceProvider.cs
+++ b/FileService/FileServiceProvider.cs
@@ -26,19 +26,19 @@ namespace Ufangx.FileServices
 
         public IEnumerable<string> AuthenticationSchemes => options.AuthenticationSchemes;
 
-        public string DefaultSchemeName => options.DefaultTopic;
+        public string DefaultSchemeName => options.DefaultScheme;
 
         FileServiceScheme GetScheme(string name) {
             if (string.IsNullOrWhiteSpace(name))
             {
                 throw new ArgumentException("message", nameof(name));
             }
-            var topic = options.SchemeMap[name];
-            if (topic == null)
+            var scheme = options.SchemeMap[name];
+            if (scheme == null)
             {
                 throw new Exception($"无效的文件服务方案名称“{name}”");
             }
-            return topic;
+            return scheme;
         }
         public IFileHandler GetHandler(string schemeName)
         {
diff --git a/FileService/Models/FileServiceOptions.cs b/FileService/Models/FileServiceOptions.cs
index 00f2730..1e893cc 100644
--- a/FileService/Models/FileServiceOptions.cs
+++ b/FileService/Models/FileServiceOptions.cs
@@ -9,7 +9,7 @@ namespace Ufangx.FileServices.Models
     {
         private readonly IList<FileServiceScheme> _schemes = new List<FileServiceScheme>();
         private readonly IList<string> _authenticationSchemes = new List<string>();
-        public string DefaultTopic { get; set; }
+        public string DefaultScheme { get; set; }
         public IEnumerable<FileServiceScheme> Schemes => _schemes;
         public IEnumerable<string> AuthenticationSchemes => _authenticationSchemes;
         public IDictionary<string, FileServiceScheme> SchemeMap { get; } = new Dictionary<string, FileServiceScheme>(StringComparer.Ordinal);
diff --git a/TestWeb/Startup.cs b/TestWeb/Startup.cs
index 1d044fc..cfedbe2 100644
--- a/TestWeb/Startup.cs
+++ b/TestWeb/Startup.cs
@@ -27,7 +27,7 @@ namespace TestWeb
         public void ConfigureServices(IServiceCollection services)
         {
             services.AddHttpContextAccessor();
-            services.AddFileServiceBuilder(opt=>opt.DefaultTopic="")
+            services.AddFileServiceBuilder(opt=>opt.DefaultScheme="")
                 .AddLocalServices(o => o.StorageRootDir = hostEnvironment.ContentRootPath);
             services.AddControllersWithViews();
         }