diff --git a/src/test/fuzz/p2p_transport_serialization.cpp b/src/test/fuzz/p2p_transport_serialization.cpp
index e457d93cd1f..80a1781de27 100644
--- a/src/test/fuzz/p2p_transport_serialization.cpp
+++ b/src/test/fuzz/p2p_transport_serialization.cpp
@@ -86,7 +86,6 @@ FUZZ_TARGET(p2p_transport_serialization, .init = initialize_p2p_transport_serial
             assert(msg.m_raw_message_size == CMessageHeader::HEADER_SIZE + msg.m_message_size);
             assert(msg.m_time == time);
 
-            std::vector<unsigned char> header;
             auto msg2 = NetMsg::Make(msg.m_type, std::span{msg.m_recv});
             bool queued = send_transport.SetMessageToSend(msg2);
             assert(queued);