diff --git a/libraries/AP_BattMonitor/AP_BattMonitor.cpp b/libraries/AP_BattMonitor/AP_BattMonitor.cpp
index bf04aeb514..e62ddc28b1 100644
--- a/libraries/AP_BattMonitor/AP_BattMonitor.cpp
+++ b/libraries/AP_BattMonitor/AP_BattMonitor.cpp
@@ -651,7 +651,7 @@ void AP_BattMonitor::convert_dynamic_param_groups(uint8_t instance)
     }
 }
 
-// read - For all active instances read voltage & current; log BAT, BCL, POWR
+// read - For all active instances read voltage & current; log BAT, BCL, POWR, MCU
 void AP_BattMonitor::read()
 {
 #if HAL_LOGGING_ENABLED