diff --git a/samples/bluetooth/direct_test_mode/src/dtm.c b/samples/bluetooth/direct_test_mode/src/dtm.c
index b186474dedff..9fe4323c8549 100644
--- a/samples/bluetooth/direct_test_mode/src/dtm.c
+++ b/samples/bluetooth/direct_test_mode/src/dtm.c
@@ -1817,7 +1817,7 @@ static uint32_t dtm_packet_interval_calculate(uint32_t test_payload_length,
 		 * 24 CRC
 		 */
 		overhead_bits = 88; /* 11 bytes */
-	} else if (mode == NRF_RADIO_MODE_NRF_1MBIT) {
+	} else if (mode == NRF_RADIO_MODE_BLE_1MBIT) {
 		/*  8 preamble
 		 * 32 sync word
 		 *  8 PDU header, actually packetHeaderS0len * 8