diff --git a/samples/bluetooth/channel_sounding_ras_initiator/src/main.c b/samples/bluetooth/channel_sounding_ras_initiator/src/main.c
index 022298ab9723..0b64f23f7db1 100644
--- a/samples/bluetooth/channel_sounding_ras_initiator/src/main.c
+++ b/samples/bluetooth/channel_sounding_ras_initiator/src/main.c
@@ -460,7 +460,7 @@ int main(void)
 		.max_procedure_count = 1,
 		.min_subevent_len = 60000,
 		.max_subevent_len = 60000,
-		.tone_antenna_config_selection = BT_LE_CS_TONE_ANTENNA_CONFIGURATION_INDEX_ONE,
+		.tone_antenna_config_selection = BT_LE_CS_TONE_ANTENNA_CONFIGURATION_A1_B1,
 		.phy = BT_LE_CS_PROCEDURE_PHY_1M,
 		.tx_power_delta = 0x80,
 		.preferred_peer_antenna = BT_LE_CS_PROCEDURE_PREFERRED_PEER_ANTENNA_1,