diff --git a/src/Common/MemoryBufferWriter.cs b/src/Common/MemoryBufferWriter.cs
index adf5820429..2b0fa29d62 100644
--- a/src/Common/MemoryBufferWriter.cs
+++ b/src/Common/MemoryBufferWriter.cs
@@ -288,7 +288,7 @@ namespace Microsoft.AspNetCore.Internal
 #if NETCOREAPP2_1
         public override void Write(ReadOnlySpan<byte> span)
         {
-            if (_currentSegment != null && span.TryCopyTo(_currentSegment.AsSpan().Slice(_position)))
+            if (_currentSegment != null && span.TryCopyTo(_currentSegment.AsSpan(_position)))
             {
                 _position += span.Length;
                 _bytesWritten += span.Length;
diff --git a/test/Microsoft.AspNetCore.SignalR.Tests/EndToEndTests.cs b/test/Microsoft.AspNetCore.SignalR.Tests/EndToEndTests.cs
index 0bebfc3ebc..58cba9e36a 100644
--- a/test/Microsoft.AspNetCore.SignalR.Tests/EndToEndTests.cs
+++ b/test/Microsoft.AspNetCore.SignalR.Tests/EndToEndTests.cs
@@ -107,7 +107,7 @@ namespace Microsoft.AspNetCore.SignalR.Tests
                     var result = await ws.ReceiveAsync(buffer, CancellationToken.None).OrTimeout();
                     logger.LogInformation("Received {length} byte frame", result.Count);
 
-                    Assert.Equal(bytes, buffer.Array.AsSpan().Slice(0, result.Count).ToArray());
+                    Assert.Equal(bytes, buffer.Array.AsSpan(0, result.Count).ToArray());
 
                     logger.LogInformation("Closing socket");
                     await ws.CloseOutputAsync(WebSocketCloseStatus.Empty, "", CancellationToken.None).OrTimeout();
@@ -145,7 +145,7 @@ namespace Microsoft.AspNetCore.SignalR.Tests
                     var result = await ws.ReceiveAsync(buffer, CancellationToken.None).OrTimeout();
                     logger.LogInformation("Received {length} byte frame", result.Count);
 
-                    Assert.Equal(bytes, buffer.Array.AsSpan().Slice(0, result.Count).ToArray());
+                    Assert.Equal(bytes, buffer.Array.AsSpan(0, result.Count).ToArray());
 
                     logger.LogInformation("Closing socket");
                     await ws.CloseOutputAsync(WebSocketCloseStatus.Empty, "", CancellationToken.None).OrTimeout();