diff --git a/ArduCopter/RC_Channel.cpp b/ArduCopter/RC_Channel.cpp
index 46b5a6d3cb..347f6474ea 100644
--- a/ArduCopter/RC_Channel.cpp
+++ b/ArduCopter/RC_Channel.cpp
@@ -57,6 +57,10 @@ bool RC_Channels_Copter::has_valid_input() const
     return true;
 }
 
+RC_Channel * RC_Channels_Copter::get_arming_channel(void) const
+{
+    return copter.channel_yaw;
+}
 
 // init_aux_switch_function - initialize aux functions
 void RC_Channel_Copter::init_aux_function(const aux_func_t ch_option, const aux_switch_pos_t ch_flag)
diff --git a/ArduCopter/RC_Channel.h b/ArduCopter/RC_Channel.h
index 2216e58f4f..5bbade586e 100644
--- a/ArduCopter/RC_Channel.h
+++ b/ArduCopter/RC_Channel.h
@@ -31,6 +31,8 @@ public:
 
     bool has_valid_input() const override;
 
+    RC_Channel *get_arming_channel(void) const override;
+
     RC_Channel_Copter obj_channels[NUM_RC_CHANNELS];
     RC_Channel_Copter *channel(const uint8_t chan) override {
         if (chan >= NUM_RC_CHANNELS) {