diff --git a/docs/16_mum_internals.md b/docs/16_mum_internals.md
index 4e828a8..7aa590c 100644
--- a/docs/16_mum_internals.md
+++ b/docs/16_mum_internals.md
@@ -38,12 +38,13 @@ sequenceDiagram
   T->>A: connect()
   A->>MM: MelexisUniversalMaster()
   A->>MM: open_all(host)
-  A->>MM: get_device('power_out0')
-  A->>MM: get_device('lin0')
+  A->>MM: get_device(power_out0)
+  A->>MM: get_device(lin0)
   A->>MM: linmaster.setup()
   A->>PL: LinBusManager(linmaster)
-  A->>PL: LinDevice22(lin_bus); set baudrate
-  A->>PL: get_device('bus/transport_layer')
+  A->>PL: LinDevice22(lin_bus)
+  A->>PL: set baudrate
+  A->>PL: get_device(bus/transport_layer)
   A->>MM: power_control.power_up()
   Note over A: sleep(boot_settle_seconds)
   A-->>T: connected
@@ -59,7 +60,7 @@ sequenceDiagram
   A->>PL: send_message(master_to_slave=True, frame_id=0x0A, data_length=8, data=payload)
   PL->>E: header + payload (Enhanced checksum)
 
-  T->>A: send_raw(b"\x7F\x06\xB5...")
+  T->>A: send_raw(bytes)
   A->>PL: transport_layer.ld_put_raw(data, baudrate)
   Note over PL,E: LIN 1.x Classic checksum (required for BSM-SNPD)
 
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