diff --git a/test/Microsoft.AspNetCore.Server.KestrelTests/BadHttpRequestTests.cs b/test/Microsoft.AspNetCore.Server.KestrelTests/BadHttpRequestTests.cs
index 1f2a5e6413..e4b9686157 100644
--- a/test/Microsoft.AspNetCore.Server.KestrelTests/BadHttpRequestTests.cs
+++ b/test/Microsoft.AspNetCore.Server.KestrelTests/BadHttpRequestTests.cs
@@ -181,7 +181,7 @@ namespace Microsoft.AspNetCore.Server.KestrelTests
                 {
                     await connection.SendEnd(
                         "GET / HTTP/1.1",
-                        "Hëädër: value",
+                        "H\u00eb\u00e4d\u00ebr: value",
                         "",
                         "");
                     await ReceiveBadRequestResponse(connection);
@@ -204,4 +204,4 @@ namespace Microsoft.AspNetCore.Server.KestrelTests
                 "");
         }
     }
-}
\ No newline at end of file
+}