diff --git a/drivers/net/ethernet/intel/idpf/idpf_ptp.c b/drivers/net/ethernet/intel/idpf/idpf_ptp.c
index 4a51d2727547..71fe8b2a8b4e 100644
--- a/drivers/net/ethernet/intel/idpf/idpf_ptp.c
+++ b/drivers/net/ethernet/intel/idpf/idpf_ptp.c
@@ -51,7 +51,7 @@ void idpf_ptp_get_features_access(const struct idpf_adapter *adapter)
 
 	/* Set the device clock time */
 	direct = VIRTCHNL2_CAP_PTP_SET_DEVICE_CLK_TIME;
-	mailbox = VIRTCHNL2_CAP_PTP_SET_DEVICE_CLK_TIME;
+	mailbox = VIRTCHNL2_CAP_PTP_SET_DEVICE_CLK_TIME_MB;
 	ptp->set_dev_clk_time_access = idpf_ptp_get_access(adapter,
 							   direct,
 							   mailbox);