diff --git a/ArduCopter/GCS_Mavlink.cpp b/ArduCopter/GCS_Mavlink.cpp
index 705d986060..fdee4eec69 100644
--- a/ArduCopter/GCS_Mavlink.cpp
+++ b/ArduCopter/GCS_Mavlink.cpp
@@ -1526,13 +1526,11 @@ void GCS_MAVLINK::handleMessage(mavlink_message_t* msg)
 
             send_text(MAV_SEVERITY_WARNING, "Frame: " FRAME_CONFIG_STRING);
 
-            #if CONFIG_HAL_BOARD != HAL_BOARD_APM1 && CONFIG_HAL_BOARD != HAL_BOARD_APM2
             // send system ID if we can
             char sysid[40];
             if (hal.util->get_system_id(sysid)) {
                 send_text(MAV_SEVERITY_WARNING, sysid);
             }
-            #endif
 
             break;
         }
diff --git a/ArduCopter/config.h b/ArduCopter/config.h
index 5f30ff1ac9..6145d3665e 100644
--- a/ArduCopter/config.h
+++ b/ArduCopter/config.h
@@ -60,11 +60,6 @@
 
 #define MAGNETOMETER ENABLED
 
-// low power cpus are not supported
-#if HAL_CPU_CLASS < HAL_CPU_CLASS_75
- # error ArduCopter ver3.3 and higher is not supported on APM1, APM2 boards
-#endif
-
 // run at 400Hz on all systems
 # define MAIN_LOOP_RATE    400
 # define MAIN_LOOP_SECONDS 0.0025f