diff --git a/libraries/AP_AHRS/AP_AHRS.h b/libraries/AP_AHRS/AP_AHRS.h
index 383a3e1052..69e40611a3 100644
--- a/libraries/AP_AHRS/AP_AHRS.h
+++ b/libraries/AP_AHRS/AP_AHRS.h
@@ -415,7 +415,7 @@ private:
     EKFType last_active_ekf_type;
 
 #if CONFIG_HAL_BOARD == HAL_BOARD_SITL
-    SITL::SITL *_sitl;
+    SITL::SIM *_sitl;
     uint32_t _last_body_odm_update_ms;
     void update_SITL(void);
 #endif