diff --git a/MapleLib/WzLib/Serializer/WzImgSerializer.cs b/MapleLib/WzLib/Serializer/WzImgSerializer.cs
index ec6e601..d0d3f27 100644
--- a/MapleLib/WzLib/Serializer/WzImgSerializer.cs
+++ b/MapleLib/WzLib/Serializer/WzImgSerializer.cs
@@ -79,9 +79,7 @@ public void SerializeImage(WzImage img, string outPath)
             {
                 using (WzBinaryWriter wzWriter = new WzBinaryWriter(stream, GetOutputIv(img)))
                 {
-                    img.SaveImage(wzWriter, true,
-                        forceReadFromData: true // update the pos of data relative to itself, instead of the wz
-                        );
+                    img.SaveImage(wzWriter);
                 }
             }
         }
diff --git a/MapleLib/WzLib/WzImage.cs b/MapleLib/WzLib/WzImage.cs
index 094f327..f8d6605 100644
--- a/MapleLib/WzLib/WzImage.cs
+++ b/MapleLib/WzLib/WzImage.cs
@@ -487,7 +487,7 @@ public void SaveImage(WzBinaryWriter writer, bool bIsWzUserKeyDefault = true, bo
             {
                 long pos = reader.BaseStream.Position;
                 reader.BaseStream.Position = offset;
-                writer.Write(reader.ReadBytes((int)pos));
+                writer.Write(reader.ReadBytes((int)size));
 
                 reader.BaseStream.Position = pos; // reset
             }