diff --git a/ecrterm/packets/base_packets.py b/ecrterm/packets/base_packets.py
index 773585a..02c23fb 100644
--- a/ecrterm/packets/base_packets.py
+++ b/ecrterm/packets/base_packets.py
@@ -531,3 +531,7 @@ class WriteFiles(WriteFileBase):
             return self._files[file_id][offset:(offset+length)]
         else:
             return self._files[file_id][offset:]
+
+    @classmethod
+    def can_parse(cls, data: Union[bytes, List[int]]) -> bool:
+        return False
diff --git a/ecrterm/tests/test_apdu.py b/ecrterm/tests/test_apdu.py
index 38e1322..9f5f7e7 100644
--- a/ecrterm/tests/test_apdu.py
+++ b/ecrterm/tests/test_apdu.py
@@ -1,7 +1,7 @@
 from ecrterm.packets.apdu import CommandAPDU, ParseError
 from ecrterm.packets.tlv import TLV
 from ecrterm.packets.fields import ByteField, BytesField, BCDIntField
-from ecrterm.packets.base_packets import LogOff, Initialisation, Registration, DisplayText, Completion, PrintLine, Authorisation, WriteFile
+from ecrterm.packets.base_packets import LogOff, Initialisation, Registration, DisplayText, Completion, PrintLine, Authorisation, WriteFileBase
 from unittest import TestCase, main
 
 
@@ -175,12 +175,17 @@ class TestAPDUBitmaps(TestCase):
 
 class TestRegression(TestCase):
     def test_write_file_apdu(self):
-        c = WriteFile(password='000000', tlv=[
+        c = WriteFileBase(password='000000', tlv=[
             (0x2d, {0x1d: 0x20, 0x1f00: 615}),
             (0x2d, {0x1d: 0x21, 0x1f00: 3403228}),
         ])
         c.serialize()
 
+    def test_write_file_2(self):
+        c = CommandAPDU.parse([16, 2, 8, 20, 101, 0, 0, 0, 6, 96, 45, 10, 29, 1, 48, 31, 0, 4, 0, 0, 2, 103, 45, 10, 29, 1, 49, 31, 0, 4, 0, 0, 0, 231, 45, 10, 29, 1, 33, 31, 0, 4, 0, 59, 48, 18, 45, 10, 29, 1, 32, 31, 0, 4, 0, 0, 2, 103, 45, 10, 29, 1, 16, 16, 31, 0, 4, 0, 41, 58, 67, 45, 10, 29, 1, 17, 31, 0, 4, 0, 180, 5, 108, 45, 10, 29, 1, 18, 31, 0, 4, 0, 0, 3, 57, 45, 10, 29, 1, 19, 31, 0, 4, 0, 0, 6, 2, 16, 3, 185, 57])
+        self.assertIsInstance(c, WriteFileBase)
+
+
 
 if __name__ == '__main__':
     main()