diff --git a/ArduCopter/radio.cpp b/ArduCopter/radio.cpp
index a0840ebc9f..5d91d84fcf 100644
--- a/ArduCopter/radio.cpp
+++ b/ArduCopter/radio.cpp
@@ -59,7 +59,7 @@ void Copter::init_rc_out()
 #if FRAME_CONFIG != HELI_FRAME
     motors->set_throttle_range(channel_throttle->get_radio_min(), channel_throttle->get_radio_max());
 #else
-    // setup correct scaling for ESCs like the UAVCAN PX4ESC which
+    // setup correct scaling for ESCs like the UAVCAN ESCs which
     // take a proportion of speed.
     hal.rcout->set_esc_scaling(channel_throttle->get_radio_min(), channel_throttle->get_radio_max());
 #endif