diff --git a/src/ImageSharp/IO/BufferedReadStream.cs b/src/ImageSharp/IO/BufferedReadStream.cs
index 1fee5db7f..269c1aa8e 100644
--- a/src/ImageSharp/IO/BufferedReadStream.cs
+++ b/src/ImageSharp/IO/BufferedReadStream.cs
@@ -286,7 +286,7 @@ namespace SixLabors.ImageSharp.IO
             int i;
             do
             {
-                i = this.BaseStream.Read(buffer, n, count - n);
+                i = this.BaseStream.Read(buffer, n + offset, count - n);
                 n += i;
             }
             while (n < count && i > 0);