diff --git a/include/haproxy/sc_strm.h b/include/haproxy/sc_strm.h
index c54b6162c..722662eaa 100644
--- a/include/haproxy/sc_strm.h
+++ b/include/haproxy/sc_strm.h
@@ -281,6 +281,9 @@ static inline int sc_is_recv_allowed(const struct stconn *sc)
 	if (sc_ep_test(sc, SE_FL_HAVE_NO_DATA))
 		return 0;
 
+	if (sc_ep_test(sc, SE_FL_MAY_FASTFWD) && (sc_opposite(sc)->sedesc->iobuf.flags & IOBUF_FL_FF_BLOCKED))
+		return 0;
+
 	return !(sc->flags & (SC_FL_WONT_READ|SC_FL_NEED_BUFF|SC_FL_NEED_ROOM));
 }