diff --git a/GameRes/BinaryStream.cs b/GameRes/BinaryStream.cs
index 654e0ede..d8ed716a 100644
--- a/GameRes/BinaryStream.cs
+++ b/GameRes/BinaryStream.cs
@@ -620,6 +620,7 @@ namespace GameRes
             count = Math.Min (count, m_length - m_position);
             var buffer = new byte[count];
             Buffer.BlockCopy (m_source, m_start+m_position, buffer, 0, count);
+            m_position += count;
             return buffer;
         }