diff --git a/libs/core/cdutils_protocol.h b/libs/core/cdutils_protocol.h
index b6385b2..a0e8e7e 100644
--- a/libs/core/cdutils_protocol.h
+++ b/libs/core/cdutils_protocol.h
@@ -62,9 +62,6 @@ namespace CDUtils {
 # pragma pack(pop)
 
 
-inline PIByteArray & operator <<(PIByteArray & s, const PacketHeader & v) {s << v.type << v.session_id; return s;}
-inline PIByteArray & operator >>(PIByteArray & s, PacketHeader & v) {s >> v.type >> v.session_id; return s;}
-
 inline PIByteArray & operator <<(PIByteArray & s, const PacketKDirectChange & v) {s << v.path << v.value; return s;}
 inline PIByteArray & operator >>(PIByteArray & s, PacketKDirectChange & v) {s >> v.path >> v.value; return s;}