Index: ammosreader/AmmosGlobalFrameHeader.py
===================================================================
--- ammosreader/AmmosGlobalFrameHeader.py	(revision 2c2e68932e6b069f6413bd54c8aada817f935b3a)
+++ ammosreader/AmmosGlobalFrameHeader.py	(revision 11d7992aabc2e25d836952b88846d260372712ae)
@@ -12,5 +12,5 @@
 
     @classmethod
-    def from_bytes(cls, bytes):
+    def from_bytes(cls, bytes, debug:bool=True):
         """I create a new AmmosGlobalFrameHeader from bytes."""
         assert len(bytes) == cls.HEADER_SIZE
@@ -34,5 +34,5 @@
 
         return AmmosGlobalFrameHeader(magic_word, frame_length, running_frame_number,
-                                      frame_type, data_header_length, reserved)
+                                      frame_type, data_header_length, reserved, debug)
 
     def __init__(self, magic_word, frame_length, running_frame_number, frame_type, data_header_length, reserved, debug:bool=True):