diff --git a/contrib/debug/flags.c b/contrib/debug/flags.c
index bc71bde96..cf11a71f1 100644
--- a/contrib/debug/flags.c
+++ b/contrib/debug/flags.c
@@ -118,7 +118,6 @@ void show_conn_flags(unsigned int f)
 	SHOW_FLAG(f, CO_FL_SOCK_RD_SH);
 	SHOW_FLAG(f, CO_FL_DATA_WR_SH);
 	SHOW_FLAG(f, CO_FL_DATA_RD_SH);
-	SHOW_FLAG(f, CO_FL_WAKE_DATA);
 	SHOW_FLAG(f, CO_FL_INIT_DATA);
 	SHOW_FLAG(f, CO_FL_ADDR_TO_SET);
 	SHOW_FLAG(f, CO_FL_ADDR_FROM_SET);
diff --git a/include/proto/stream_interface.h b/include/proto/stream_interface.h
index 525b6cf2c..391d8714e 100644
--- a/include/proto/stream_interface.h
+++ b/include/proto/stream_interface.h
@@ -356,9 +356,6 @@ static inline int si_connect(struct stream_interface *si)
 		if (ret != SF_ERR_NONE)
 			return ret;
 
-		/* we need to be notified about connection establishment */
-		conn->flags |= CO_FL_WAKE_DATA;
-
 		/* we're in the process of establishing a connection */
 		si->state = SI_ST_CON;
 	}
diff --git a/include/types/connection.h b/include/types/connection.h
index 657c9a147..5ce5e0cc5 100644
--- a/include/types/connection.h
+++ b/include/types/connection.h
@@ -88,7 +88,7 @@ enum {
 
 	/* flags indicating what event type the data layer is interested in */
 	CO_FL_INIT_DATA     = 0x00004000,  /* initialize the data layer before using it */
-	CO_FL_WAKE_DATA     = 0x00008000,  /* wake-up data layer upon activity at the transport layer */
+	/* unused : 0x00008000 */
 
 	/* flags used to remember what shutdown have been performed/reported */
 	CO_FL_DATA_RD_SH    = 0x00010000,  /* DATA layer was notified about shutr/read0 */
diff --git a/src/checks.c b/src/checks.c
index dba45f0c8..77d57dc87 100644
--- a/src/checks.c
+++ b/src/checks.c
@@ -1559,7 +1559,6 @@ static int connect_conn_chk(struct task *t)
 	ret = SF_ERR_INTERNAL;
 	if (proto->connect)
 		ret = proto->connect(conn, check->type, quickack ? 2 : 0);
-	conn->flags |= CO_FL_WAKE_DATA;
 	if (s->check.send_proxy) {
 		conn->send_proxy_ofs = 1;
 		conn->flags |= CO_FL_SEND_PROXY;
@@ -2753,7 +2752,6 @@ static void tcpcheck_main(struct connection *conn)
 				ret = proto->connect(conn,
 						     1 /* I/O polling is always needed */,
 						     (next && next->action == TCPCHK_ACT_EXPECT) ? 0 : 2);
-			conn->flags |= CO_FL_WAKE_DATA;
 			if (check->current_step->conn_opts & TCPCHK_OPT_SEND_PROXY) {
 				conn->send_proxy_ofs = 1;
 				conn->flags |= CO_FL_SEND_PROXY;
diff --git a/src/session.c b/src/session.c
index 581897d79..34250eb53 100644
--- a/src/session.c
+++ b/src/session.c
@@ -253,16 +253,13 @@ int session_accept_fd(struct listener *l, int cfd, struct sockaddr_storage *addr
 		t->process = session_expire_embryonic;
 		t->expire = tick_add_ifset(now_ms, p->timeout.client);
 		task_queue(t);
-		cli_conn->flags |= CO_FL_INIT_DATA | CO_FL_WAKE_DATA;
+		cli_conn->flags |= CO_FL_INIT_DATA;
 		return 1;
 	}
 
 	/* OK let's complete stream initialization since there is no handshake */
 	cli_conn->flags |= CO_FL_CONNECTED;
 
-	/* we want the connection handler to notify the stream interface about updates. */
-	cli_conn->flags |= CO_FL_WAKE_DATA;
-
 	/* if logs require transport layer information, note it on the connection */
 	if (sess->fe->to_log & LW_XPRT)
 		cli_conn->flags |= CO_FL_XPRT_TRACKED;
@@ -431,9 +428,6 @@ static int conn_complete_session(struct connection *conn)
 	if (conn->flags & CO_FL_ERROR)
 		goto fail;
 
-	/* we want the connection handler to notify the stream interface about updates. */
-	conn->flags |= CO_FL_WAKE_DATA;
-
 	/* if logs require transport layer information, note it on the connection */
 	if (sess->fe->to_log & LW_XPRT)
 		conn->flags |= CO_FL_XPRT_TRACKED;