diff --git a/net/dcsctp/packet/sctp_packet.h b/net/dcsctp/packet/sctp_packet.h
index 2600caf7a9..4c6234e0c9 100644
--- a/net/dcsctp/packet/sctp_packet.h
+++ b/net/dcsctp/packet/sctp_packet.h
@@ -77,7 +77,6 @@ class SctpPacket {
     std::vector<uint8_t> Build();
 
    private:
-    void WritePacketHeader();
     VerificationTag verification_tag_;
     uint16_t source_port_;
     uint16_t dest_port_;