diff --git a/include/haproxy/protocol-t.h b/include/haproxy/protocol-t.h
index ae7ec1975..f2aa4affe 100644
--- a/include/haproxy/protocol-t.h
+++ b/include/haproxy/protocol-t.h
@@ -106,7 +106,6 @@ struct protocol {
 	/* functions acting on connections */
 	void (*accept)(int fd);				/* generic accept function */
 	int (*connect)(struct connection *, int flags); /* connect function if any, see below for flags values */
-	int (*drain)(int fd);                           /* indicates whether we can safely close the fd */
 
 	struct list receivers;				/* list of receivers using this protocol (under proto_lock) */
 	int nb_receivers;				/* number of receivers (under proto_lock) */
diff --git a/src/connection.c b/src/connection.c
index 9c017bcf9..1274112d8 100644
--- a/src/connection.c
+++ b/src/connection.c
@@ -420,12 +420,6 @@ int conn_sock_drain(struct connection *conn)
 	if (!fd_recv_ready(conn->handle.fd))
 		return 0;
 
-	if (conn->ctrl->drain) {
-		if (conn->ctrl->drain(conn->handle.fd) <= 0)
-			return 0;
-		goto shut;
-	}
-
 	/* no drain function defined, use the generic one */
 
 	while (turns) {