diff --git a/ArduCopter/config.h b/ArduCopter/config.h
index e21ed6c937..51cbc3aa81 100644
--- a/ArduCopter/config.h
+++ b/ArduCopter/config.h
@@ -69,6 +69,7 @@
  # define CONFIG_IMU_TYPE   CONFIG_IMU_SITL
  # define CONFIG_SONAR_SOURCE SONAR_SOURCE_ANALOG_PIN
  # define MAGNETOMETER ENABLED
+ # define OPTFLOW DISABLED
 #elif CONFIG_HAL_BOARD == HAL_BOARD_PX4
  # define CONFIG_IMU_TYPE   CONFIG_IMU_PX4
  # define CONFIG_BARO       AP_BARO_PX4