diff --git a/libraries/AP_EFI/AP_EFI_NWPMU.cpp b/libraries/AP_EFI/AP_EFI_NWPMU.cpp
index 9fd732ee15..66df829aec 100644
--- a/libraries/AP_EFI/AP_EFI_NWPMU.cpp
+++ b/libraries/AP_EFI/AP_EFI_NWPMU.cpp
@@ -32,7 +32,7 @@ AP_EFI_NWPMU::AP_EFI_NWPMU(AP_EFI &_frontend) :
     CANSensor("NWPMU"),
     AP_EFI_Backend(_frontend)
 {
-    register_driver(AP_CANManager::Driver_Type_EFI_NWPMU);
+    register_driver(AP_CAN::Protocol::EFI_NWPMU);
 }
 
 void AP_EFI_NWPMU::handle_frame(AP_HAL::CANFrame &frame)