diff --git a/ArduCopter/AP_Arming.cpp b/ArduCopter/AP_Arming.cpp
index d9e1677cda..d64d809b3a 100644
--- a/ArduCopter/AP_Arming.cpp
+++ b/ArduCopter/AP_Arming.cpp
@@ -351,19 +351,19 @@ void AP_Arming_Copter::pre_arm_rc_checks(const bool display_failure)
         // check if radio has been calibrated
         if (!channel->min_max_configured()) {
             if (display_failure) {
-                copter.gcs().send_text(MAV_SEVERITY_CRITICAL,"PreArm: RC %s not configured", channel_name);
+                gcs().send_text(MAV_SEVERITY_CRITICAL,"PreArm: RC %s not configured", channel_name);
             }
             return;
         }
         if (channel->get_radio_min() > 1300) {
             if (display_failure) {
-                copter.gcs().send_text(MAV_SEVERITY_CRITICAL,"PreArm: %s radio min too high", channel_name);
+                gcs().send_text(MAV_SEVERITY_CRITICAL,"PreArm: %s radio min too high", channel_name);
             }
             return;
         }
         if (channel->get_radio_max() < 1700) {
             if (display_failure) {
-                copter.gcs().send_text(MAV_SEVERITY_CRITICAL,"PreArm: %s radio max too low", channel_name);
+                gcs().send_text(MAV_SEVERITY_CRITICAL,"PreArm: %s radio max too low", channel_name);
             }
             return;
         }
@@ -373,13 +373,13 @@ void AP_Arming_Copter::pre_arm_rc_checks(const bool display_failure)
         }
         if (channel->get_radio_trim() < channel->get_radio_min()) {
             if (display_failure) {
-                copter.gcs().send_text(MAV_SEVERITY_CRITICAL,"PreArm: %s radio trim below min", channel_name);
+                gcs().send_text(MAV_SEVERITY_CRITICAL,"PreArm: %s radio trim below min", channel_name);
             }
             return;
         }
         if (channel->get_radio_trim() > channel->get_radio_max()) {
             if (display_failure) {
-                copter.gcs().send_text(MAV_SEVERITY_CRITICAL,"PreArm: %s radio trim above max", channel_name);
+                gcs().send_text(MAV_SEVERITY_CRITICAL,"PreArm: %s radio trim above max", channel_name);
             }
             return;
         }