diff --git a/nselib/shortport.lua b/nselib/shortport.lua
index 02dea11a2..9d18bdc1c 100644
--- a/nselib/shortport.lua
+++ b/nselib/shortport.lua
@@ -161,6 +161,7 @@ LIKELY_HTTP_PORTS = {
 
 LIKELY_HTTP_SERVICES = {
 	"http", "https", "ipp", "http-alt", "vnc-http", "oem-agent", "soap",
+	"http-proxy",
 }
 
 ---