diff --git a/ddbridge/ddbridge-sx8.c b/ddbridge/ddbridge-sx8.c
index afc7cfe..a55f3f6 100644
--- a/ddbridge/ddbridge-sx8.c
+++ b/ddbridge/ddbridge-sx8.c
@@ -330,7 +330,7 @@ unlock:
 	cmd.dvbs2_search.frequency = p->frequency * 1000;
 	cmd.dvbs2_search.symbol_rate = p->symbol_rate;
 	cmd.dvbs2_search.scrambling_sequence_index =
-		p->scrambling_sequence_index;
+		p->scrambling_sequence_index | 0x80000000;
 	cmd.dvbs2_search.input_stream_id = p->stream_id;
 	cmd.tuner = state->mci.tuner;
 	cmd.demod = state->mci.demod;