diff --git a/CHANGELOG b/CHANGELOG
index d16a961e9..d45a79257 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -9,6 +9,10 @@ o When an NSE script changes the state of a port (e.g. from
   scripts through a "reason" element in the port-table.  Thanks to
   Matthew Boyle for the patch.
 
+o When version detection changes the state of a port, the reason field
+  is now updated as well (to udp-response or tcp-response as
+  applicable).  Thanks to Thomas Buchanan for the patch.
+
 o Reworded an error message after a woman reported that it was "highly
   offensive and sexist".  She also noted that "times have changed and
   many women now use your software" and "a sexist remark like the one
diff --git a/service_scan.cc b/service_scan.cc
index 809a6dc48..a3e1c1b32 100644
--- a/service_scan.cc
+++ b/service_scan.cc
@@ -1694,6 +1694,10 @@ static void adjustPortStateIfNeccessary(ServiceNFO *svc) {
 
   if (svc->port->state == PORT_OPENFILTERED) {
     svc->target->ports.addPort(svc->portno, svc->proto, NULL, PORT_OPEN);
+    if (svc->proto == IPPROTO_TCP) 
+        svc->target->ports.setStateReason(svc->portno, svc->proto, ER_TCPRESPONSE, 0, 0);
+    if (svc->proto == IPPROTO_UDP)
+        svc->target->ports.setStateReason(svc->portno, svc->proto, ER_UDPRESPONSE, 0, 0);
 
     if (o.verbose || o.debugging > 1) {
       svc->target->NameIP(host, sizeof(host));