diff --git a/ArduCopter/Copter.h b/ArduCopter/Copter.h
index 0b2943f8b0..a46da47ebb 100644
--- a/ArduCopter/Copter.h
+++ b/ArduCopter/Copter.h
@@ -707,7 +707,6 @@ private:
 
     // GCS_Mavlink.cpp
     void gcs_send_heartbeat(void);
-    void send_rpm(mavlink_channel_t chan);
 
     // heli.cpp
     void heli_init();
diff --git a/ArduCopter/GCS_Mavlink.cpp b/ArduCopter/GCS_Mavlink.cpp
index 1d92d33329..d5ce0abd19 100644
--- a/ArduCopter/GCS_Mavlink.cpp
+++ b/ArduCopter/GCS_Mavlink.cpp
@@ -142,21 +142,6 @@ int16_t GCS_MAVLINK_Copter::vfr_hud_throttle() const
     return (int16_t)(copter.motors->get_throttle() * 100);
 }
 
-/*
-  send RPM packet
- */
-void NOINLINE Copter::send_rpm(mavlink_channel_t chan)
-{
-#if RPM_ENABLED == ENABLED
-    if (rpm_sensor.enabled(0) || rpm_sensor.enabled(1)) {
-        mavlink_msg_rpm_send(
-            chan,
-            rpm_sensor.get_rpm(0),
-            rpm_sensor.get_rpm(1));
-    }
-#endif
-}
-
 /*
   send PID tuning message
  */
@@ -247,13 +232,6 @@ bool GCS_MAVLINK_Copter::try_send_message(enum ap_message id)
 
     switch(id) {
 
-    case MSG_RPM:
-#if RPM_ENABLED == ENABLED
-        CHECK_PAYLOAD_SIZE(RPM);
-        copter.send_rpm(chan);
-#endif
-        break;
-
     case MSG_TERRAIN:
 #if AP_TERRAIN_AVAILABLE && AC_TERRAIN
         CHECK_PAYLOAD_SIZE(TERRAIN_REQUEST);