diff --git a/saleae_usb_pcap.py b/saleae_usb_pcap.py
line changes: +2/-2
index 89885ce..a98b46e
--- a/saleae_usb_pcap.py
+++ b/saleae_usb_pcap.py

@@ -64,9 +64,9 @@ class PcapWriter(object):
     def syslog_pdu(self, text):
         pdu_name = "syslog".encode("utf-8")
         # this is inexplicably the only packet that has to be big-endian
-        hdr = struct.pack(">H", len(pdu_name)) + pdu_name
+        EXP_PDU_TAG_DISSECTOR_NAME = 12
+        hdr = struct.pack(">HH", EXP_PDU_TAG_DISSECTOR_NAME, len(pdu_name)) + pdu_name
         hdr += self.option(0x00, "")
-        hdr = struct.pack(">H", len(hdr)) + hdr
         hdr += text.encode("utf-8")
         return hdr