diff --git a/integration-tests/server_tester.go b/integration-tests/server_tester.go
index 69de18a7..27cc01f8 100644
--- a/integration-tests/server_tester.go
+++ b/integration-tests/server_tester.go
@@ -103,6 +103,7 @@ func newServerTesterInternal(src_args []string, t *testing.T, handler http.Handl
 	backendTLS := false
 	dns := false
 	externalDNS := false
+	acceptProxyProtocol := false
 	for _, k := range src_args {
 		switch k {
 		case "--http2-bridge":
@@ -112,6 +113,8 @@ func newServerTesterInternal(src_args []string, t *testing.T, handler http.Handl
 		case "--external-dns":
 			dns = true
 			externalDNS = true
+		case "--accept-proxy-protocol":
+			acceptProxyProtocol = true
 		default:
 			args = append(args, k)
 		}
@@ -160,12 +163,17 @@ func newServerTesterInternal(src_args []string, t *testing.T, handler http.Handl
 		b += ";dns"
 	}
 
-	noTLS := "no-tls"
+	noTLS := ";no-tls"
 	if frontendTLS {
 		noTLS = ""
 	}
 
-	args = append(args, fmt.Sprintf("-f127.0.0.1,%v;%v", serverPort, noTLS), b,
+	var proxyProto string
+	if acceptProxyProtocol {
+		proxyProto = ";proxyproto"
+	}
+
+	args = append(args, fmt.Sprintf("-f127.0.0.1,%v%v%v", serverPort, noTLS, proxyProto), b,
 		"--errorlog-file="+logDir+"/log.txt", "-LINFO")
 
 	authority := fmt.Sprintf("127.0.0.1:%v", connectPort)
diff --git a/src/shrpx.cc b/src/shrpx.cc
index cddbeb51..a3b9bab7 100644
--- a/src/shrpx.cc
+++ b/src/shrpx.cc
@@ -1694,6 +1694,10 @@ Connections:
               default.  Any  requests which come through  this address
               are replied with 200 HTTP status, without no body.
 
+              To  accept   PROXY  protocol   version  1   on  frontend
+              connection,  specify  "proxyproto" parameter.   This  is
+              disabled by default.
+
               Default: *,3000
   --backlog=<N>
               Set listen backlog size.
@@ -1718,8 +1722,6 @@ Connections:
               timeouts when connecting and  making CONNECT request can
               be     specified    by     --backend-read-timeout    and
               --backend-write-timeout options.
-  --accept-proxy-protocol
-              Accept PROXY protocol version 1 on frontend connection.
 
 Performance:
   -n, --workers=<N>
diff --git a/src/shrpx_client_handler.cc b/src/shrpx_client_handler.cc
index 33b53c1b..1280d452 100644
--- a/src/shrpx_client_handler.cc
+++ b/src/shrpx_client_handler.cc
@@ -413,7 +413,8 @@ ClientHandler::ClientHandler(Worker *worker, int fd, SSL *ssl,
 
   auto config = get_config();
 
-  if (config->conn.upstream.accept_proxy_protocol) {
+  if (faddr_->accept_proxy_protocol ||
+      config->conn.upstream.accept_proxy_protocol) {
     read_ = &ClientHandler::read_clear;
     write_ = &ClientHandler::noop;
     on_read_ = &ClientHandler::proxy_protocol_read;
diff --git a/src/shrpx_config.cc b/src/shrpx_config.cc
index 56aeaf5f..eb786e84 100644
--- a/src/shrpx_config.cc
+++ b/src/shrpx_config.cc
@@ -677,6 +677,7 @@ int parse_memcached_connection_params(MemcachedConnectionParams &out,
 struct UpstreamParams {
   int alt_mode;
   bool tls;
+  bool proxyproto;
 };
 
 namespace {
@@ -705,6 +706,8 @@ int parse_upstream_params(UpstreamParams &out, const StringRef &src_params) {
         return -1;
       }
       out.alt_mode = ALTMODE_HEALTHMON;
+    } else if (util::strieq_l("proxyproto", param)) {
+      out.proxyproto = true;
     } else if (!param.empty()) {
       LOG(ERROR) << "frontend: " << param << ": unknown keyword";
       return -1;
@@ -2091,6 +2094,7 @@ int parse_config(Config *config, int optid, const StringRef &opt,
     addr.fd = -1;
     addr.tls = params.tls;
     addr.alt_mode = params.alt_mode;
+    addr.accept_proxy_protocol = params.proxyproto;
 
     if (addr.alt_mode == ALTMODE_API) {
       apiconf.enabled = true;
@@ -2883,6 +2887,8 @@ int parse_config(Config *config, int optid, const StringRef &opt,
 #endif // !HAVE_MRUBY
     return 0;
   case SHRPX_OPTID_ACCEPT_PROXY_PROTOCOL:
+    LOG(WARN) << opt << ": deprecated.  Use proxyproto keyword in "
+              << SHRPX_OPT_FRONTEND << " instead.";
     config->conn.upstream.accept_proxy_protocol = util::strieq_l("yes", optarg);
 
     return 0;
diff --git a/src/shrpx_config.h b/src/shrpx_config.h
index 272e7e40..594c2342 100644
--- a/src/shrpx_config.h
+++ b/src/shrpx_config.h
@@ -382,6 +382,8 @@ struct UpstreamAddr {
   bool host_unix;
   // true if TLS is enabled.
   bool tls;
+  // true if client is supposed to send PROXY protocol v1 header.
+  bool accept_proxy_protocol;
   int fd;
 };
 
@@ -775,6 +777,7 @@ struct ConnectionConfig {
       RateLimitConfig write;
     } ratelimit;
     size_t worker_connections;
+    // Deprecated.  See UpstreamAddr.accept_proxy_protocol.
     bool accept_proxy_protocol;
   } upstream;