diff --git a/edosl0util/stream.py b/edosl0util/stream.py
index 0342487abbd55a4f0b64937741b06d86958def63..60631fbc7147abfc4ad1b6d26cae7235eb4a316b 100644
--- a/edosl0util/stream.py
+++ b/edosl0util/stream.py
@@ -100,6 +100,7 @@ class BasicStream(object):
         else:
             data = None
             self.file.seek(data_size, os.SEEK_CUR)
+            self._offset += data_size
         return self.Tracker(h1, h2, total_size, offset, data)