diff --git a/conf/gnss-sdr_GPS_L1_2ch_udp.conf b/conf/gnss-sdr_GPS_L1_2ch_udp.conf
index 65773b04c..25334e569 100644
--- a/conf/gnss-sdr_GPS_L1_2ch_udp.conf
+++ b/conf/gnss-sdr_GPS_L1_2ch_udp.conf
@@ -19,7 +19,7 @@ SignalSource.port=1234
 SignalSource.payload_bytes=1024
 SignalSource.sample_type=cbyte
 SignalSource.RF_channels=1
-SignalSource.select_single_channel=1
+SignalSource.select_single_channel=0
 SignalSource.channels_in_udp=2
 SignalSource.IQ_swap=true
 SignalSource.dump=false