diff --git a/src/libraries/System.IO.Compression/src/System/IO/Compression/Zstandard/ZstandardStream.Decompress.cs b/src/libraries/System.IO.Compression/src/System/IO/Compression/Zstandard/ZstandardStream.Decompress.cs
index 4e24909d48af77..12f53f0ecf3ee8 100644
--- a/src/libraries/System.IO.Compression/src/System/IO/Compression/Zstandard/ZstandardStream.Decompress.cs
+++ b/src/libraries/System.IO.Compression/src/System/IO/Compression/Zstandard/ZstandardStream.Decompress.cs
@@ -117,6 +117,8 @@ public override int Read(Span<byte> buffer)
                 OperationStatus lastResult;
                 while (!TryDecompress(buffer, out bytesWritten, out lastResult))
                 {
+                    _buffer.EnsureAvailableSpace(1);
+
                     int bytesRead = _stream.Read(_buffer.AvailableSpan);
                     if (bytesRead <= 0)
                     {
@@ -192,6 +194,8 @@ public override async ValueTask<int> ReadAsync(Memory<byte> buffer, Cancellation
                 OperationStatus lastResult;
                 while (!TryDecompress(buffer.Span, out bytesWritten, out lastResult))
                 {
+                    _buffer.EnsureAvailableSpace(1);
+
                     int bytesRead = await _stream.ReadAsync(_buffer.AvailableMemory, cancellationToken).ConfigureAwait(false);
                     if (bytesRead <= 0)
                     {