diff --git a/src/NLPacketCodec.cpp b/src/NLPacketCodec.cpp
index c47d0f8..e7960df 100644
--- a/src/NLPacketCodec.cpp
+++ b/src/NLPacketCodec.cpp
@@ -115,30 +115,11 @@ void NLPacket::setSequenceNumber(SequenceNumber seq) {
 void NLPacket::setSourceID(LocalID id) {
     m_sourceID = id;
     m_isSourced = true;
-    
-    // For verified sourced packets (like Ping), we need space for:
-    // [seq+flags(4)] [type(1)] [version(1)] [sourceID(2)] [hash(16)] [payload...]
-    // Total header = 8 bytes + 16 bytes for hash = 24 bytes
-    static constexpr size_t VERIFIED_HEADER_SIZE = SOURCED_HEADER_SIZE + 16;
-    
-    // Resize header to include hash slot
-    if (m_headerSize != VERIFIED_HEADER_SIZE) {
-        size_t oldHeaderSize = m_headerSize;
-        m_headerSize = VERIFIED_HEADER_SIZE;
-        
-        // If we already have payload data, we need to move it
-        if (m_data.size() > oldHeaderSize) {
-            std::vector<uint8_t> payload(m_data.begin() + oldHeaderSize, m_data.end());
-            m_data.resize(m_headerSize);
-            m_data.insert(m_data.end(), payload.begin(), payload.end());
-        } else {
-            m_data.resize(m_headerSize);
-        }
-        
-        // Zero out the hash slot (bytes 8-23)
-        std::memset(m_data.data() + SOURCED_HEADER_SIZE, 0, 16);
+    // Resize if needed to sourced header (no hash - we don't have HMAC auth)
+    if (m_headerSize != SOURCED_HEADER_SIZE) {
+        m_headerSize = SOURCED_HEADER_SIZE;
+        m_data.resize(m_headerSize);
     }
-    
     writeHeader();
 }