diff --git a/lib/mgmt.h b/lib/mgmt.h
index 4cfeac0..3070aab 100644
--- a/lib/mgmt.h
+++ b/lib/mgmt.h
@@ -447,6 +447,15 @@ struct mgmt_cp_set_public_address {
 	bdaddr_t bdaddr;
 } __packed;
 
+#define MGMT_OP_START_SERVICE_DISCOVERY		0x003A
+struct mgmt_cp_start_service_discovery {
+	uint8_t type;
+	int8_t rssi;
+	uint16_t uuid_count;
+	uint8_t uuids[0][16];
+} __packed;
+#define MGMT_START_SERVICE_DISCOVERY_SIZE	4
+
 #define MGMT_EV_CMD_COMPLETE		0x0001
 struct mgmt_ev_cmd_complete {
 	uint16_t opcode;