diff --git a/src/stream_interface.c b/src/stream_interface.c
index c84763274..07f9c3dab 100644
--- a/src/stream_interface.c
+++ b/src/stream_interface.c
@@ -578,6 +578,8 @@ static int si_conn_wake_cb(struct connection *conn)
 	}
 	else if ((si->ib->flags & (CF_SHUTR|CF_READ_PARTIAL|CF_DONT_READ|CF_READ_NOEXP)) == CF_READ_PARTIAL &&
 		 !channel_full(si->ib)) {
+		/* we must re-enable reading if si_chk_snd() has freed some space */
+		__conn_data_want_recv(conn);
 		if (tick_isset(si->ib->rex))
 			si->ib->rex = tick_add_ifset(now_ms, si->ib->rto);
 	}