diff --git a/libtransmission/http.c b/libtransmission/http.c
index 0248f3be4..bbd12d2d1 100644
--- a/libtransmission/http.c
+++ b/libtransmission/http.c
@@ -448,10 +448,10 @@ tr_httpClient( int method, const char * host, int port, const char * fmt, ... )
     va_end( ap1 );
 
     if( tr_sprintf( EXPANDBUF( http->header ), " HTTP/1.1" CR LF
-                    "Host: %s" CR LF
+                    "Host: %s:%d" CR LF
                     "User-Agent: %s/%d.%d%d" CR LF
                     "Connection: close" CR LF,
-                    http->host, TR_NAME, VERSION_MAJOR, VERSION_MINOR, VERSION_MAINTENANCE ) )
+                    http->host, http->port, TR_NAME, VERSION_MAJOR, VERSION_MINOR, VERSION_MAINTENANCE ) )
     {
         goto err;
     }