diff --git a/src/HttpHeader.cc b/src/HttpHeader.cc
index b934f1bd..d72ca965 100644
--- a/src/HttpHeader.cc
+++ b/src/HttpHeader.cc
@@ -278,7 +278,6 @@ const char* INTERESTING_HEADER_NAMES[] = {
   "location",
   "origin",
   "port",
-  "proxy-connection",
   "retry-after",
   "sec-websocket-key",
   "sec-websocket-version",
diff --git a/src/HttpHeader.h b/src/HttpHeader.h
index 353065c3..25f385a0 100644
--- a/src/HttpHeader.h
+++ b/src/HttpHeader.h
@@ -90,7 +90,6 @@ public:
     LOCATION,
     ORIGIN,
     PORT, // Used for BitTorrent LPD
-    PROXY_CONNECTION,
     RETRY_AFTER,
     SEC_WEBSOCKET_KEY,
     SEC_WEBSOCKET_VERSION,