diff --git a/libraries/AP_GPS/AP_GPS.h b/libraries/AP_GPS/AP_GPS.h
index 4a168d499c..a71fcae24e 100644
--- a/libraries/AP_GPS/AP_GPS.h
+++ b/libraries/AP_GPS/AP_GPS.h
@@ -45,10 +45,11 @@
 #endif
 
 /**
- * save flash by skipping NMEA and SIRF support on ArduCopter on APM1/2 or any frame type on AVR1280 CPUs
+ * save flash by skipping NMEA and SIRF support on copter and plane
+ * for APM1/APM2
  */
 #if HAL_CPU_CLASS < HAL_CPU_CLASS_75 && defined(APM_BUILD_DIRECTORY)
-  #if (APM_BUILD_TYPE(APM_BUILD_ArduCopter) || defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__))
+  #if APM_BUILD_TYPE(APM_BUILD_ArduCopter) || APM_BUILD_TYPE(APM_BUILD_ArduPlane)
     #define GPS_SKIP_SIRF_NMEA
   #endif
 #endif