diff --git a/HTTP/Routing/FileEndpoint.cs b/HTTP/Routing/FileEndpoint.cs
index 2fe572e..df484a7 100644
--- a/HTTP/Routing/FileEndpoint.cs
+++ b/HTTP/Routing/FileEndpoint.cs
@@ -87,7 +87,7 @@ public partial class FileEndpoint : RouterBase
         if (string.IsNullOrEmpty(fileInfo.Extension))
         {
             mime = new MIMEType("text", "html");
-            assetPath += ".htm";
+            assetPath += ".html";
         }
         else
         {