diff --git a/network/trans/ddproxy/sys/DD_proxy.c b/network/trans/ddproxy/sys/DD_proxy.c
index a75e2cf90..a59019089 100644
--- a/network/trans/ddproxy/sys/DD_proxy.c
+++ b/network/trans/ddproxy/sys/DD_proxy.c
@@ -833,7 +833,7 @@ DDProxyCloneModifyReinjectInbound(
                                     // is contiguous and 2-byte aligned.
       _Analysis_assume_(udpHeader != NULL);
       
-      udpHeader->destPort = 
+      udpHeader->srcPort = 
          packet->belongingFlow->toRemotePort; 
                                     // This is our new source port -- or
                                     // the destination port of the original