diff --git a/src/modules/uavcan/uavcan_main.cpp b/src/modules/uavcan/uavcan_main.cpp
index f2fef20ab4..8c2eb81eee 100644
--- a/src/modules/uavcan/uavcan_main.cpp
+++ b/src/modules/uavcan/uavcan_main.cpp
@@ -191,9 +191,9 @@ int UavcanNode::getHardwareVersion(uavcan::protocol::HardwareVersion &hwver)
 			; // All other values of px4_board_name() resolve to zero
 		}
 
-		raw_uuid_byte_t udid = {};
-		get_board_serial(udid);
-		uavcan::copy(udid, udid + sizeof(udid), hwver.unique_id.begin());
+		mfguid_t mfgid = {};
+		board_get_mfguid(mfgid);
+		uavcan::copy(mfgid, mfgid + sizeof(mfgid), hwver.unique_id.begin());
 		rv = 0;
 	}