diff --git a/src/Kestrel.Core/Internal/Http/Frame.cs b/src/Kestrel.Core/Internal/Http/Frame.cs
index d8eb4096f8..4c4121df62 100644
--- a/src/Kestrel.Core/Internal/Http/Frame.cs
+++ b/src/Kestrel.Core/Internal/Http/Frame.cs
@@ -347,8 +347,8 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http
             _absoluteRequestTarget = null;
             QueryString = null;
             _httpVersion = Http.HttpVersion.Unknown;
-            StatusCode = StatusCodes.Status200OK;
-            ReasonPhrase = null;
+            _statusCode = StatusCodes.Status200OK;
+            _reasonPhrase = null;
 
             RemoteIpAddress = RemoteEndPoint?.Address;
             RemotePort = RemoteEndPoint?.Port ?? 0;
diff --git a/src/Kestrel.Core/Internal/Http2/Http2Stream.cs b/src/Kestrel.Core/Internal/Http2/Http2Stream.cs
index c7b6b4b3ac..ea3fc33144 100644
--- a/src/Kestrel.Core/Internal/Http2/Http2Stream.cs
+++ b/src/Kestrel.Core/Internal/Http2/Http2Stream.cs
@@ -256,8 +256,8 @@ namespace Microsoft.AspNetCore.Server.Kestrel.Core.Internal.Http2
             _requestTargetForm = HttpRequestTarget.Unknown;
             _absoluteRequestTarget = null;
             QueryString = null;
-            StatusCode = StatusCodes.Status200OK;
-            ReasonPhrase = null;
+            _statusCode = StatusCodes.Status200OK;
+            _reasonPhrase = null;
 
             RemoteIpAddress = RemoteEndPoint?.Address;
             RemotePort = RemoteEndPoint?.Port ?? 0;