diff --git a/lib/mgmt.h b/lib/mgmt.h
index 101cf5f..7682537 100644
--- a/lib/mgmt.h
+++ b/lib/mgmt.h
@@ -101,7 +101,8 @@ struct mgmt_rp_read_index_list {
 #define MGMT_SETTING_PRIVACY		0x00002000
 #define MGMT_SETTING_CONFIGURATION	0x00004000
 #define MGMT_SETTING_STATIC_ADDRESS	0x00008000
-#define MGMT_SETTING_PHY_CONFIGURATION 0x00010000
+#define MGMT_SETTING_PHY_CONFIGURATION	0x00010000
+#define MGMT_SETTING_WIDEBAND_SPEECH	0x00020000
 
 #define MGMT_OP_READ_INFO		0x0004
 struct mgmt_rp_read_info {
@@ -599,6 +600,8 @@ struct mgmt_cp_set_blocked_keys {
 	struct mgmt_blocked_key_info keys[0];
 } __packed;
 
+#define MGMT_OP_SET_WIDEBAND_SPEECH	0x0047
+
 #define MGMT_EV_CMD_COMPLETE		0x0001
 struct mgmt_ev_cmd_complete {
 	uint16_t opcode;