1 files changed, 3 insertions, 2 deletions
diff --git a/src/System.Private.CoreLib/src/System/IO/Stream.cs b/src/System.Private.CoreLib/src/System/IO/Stream.cs
index 13545cf99..42fd2cb6a 100644
--- a/src/System.Private.CoreLib/src/System/IO/Stream.cs
+++ b/src/System.Private.CoreLib/src/System/IO/Stream.cs
@@ -148,9 +148,10 @@ namespace System.IO
             Debug.Assert(destination.CanWrite);
 
             byte[] buffer = new byte[bufferSize];
-            int bytesRead;
-            while ((bytesRead = await ReadAsync(buffer, 0, buffer.Length, cancellationToken).ConfigureAwait(false)) != 0)
+            while (true)
             {
+                int bytesRead = await ReadAsync(buffer, 0, buffer.Length, cancellationToken).ConfigureAwait(false);
+                if (bytesRead == 0) break;
                 await destination.WriteAsync(buffer, 0, bytesRead, cancellationToken).ConfigureAwait(false);
             }
         }