diff --git a/ArduCopter/Copter.h b/ArduCopter/Copter.h
index c4b123777d..5e8a87970f 100644
--- a/ArduCopter/Copter.h
+++ b/ArduCopter/Copter.h
@@ -304,7 +304,7 @@ private:
     AP_AHRS_View *ahrs_view;
 
 #if CONFIG_HAL_BOARD == HAL_BOARD_SITL
-    SITL::SITL sitl;
+    SITL::SIM sitl;
 #endif
 
     // Arming/Disarming management class
diff --git a/ArduCopter/Parameters.cpp b/ArduCopter/Parameters.cpp
index d6eef8a068..8c5fc48945 100644
--- a/ArduCopter/Parameters.cpp
+++ b/ArduCopter/Parameters.cpp
@@ -624,7 +624,7 @@ const AP_Param::Info Copter::var_info[] = {
 #if CONFIG_HAL_BOARD == HAL_BOARD_SITL
     // @Group: SIM_
     // @Path: ../libraries/SITL/SITL.cpp
-    GOBJECT(sitl, "SIM_", SITL::SITL),
+    GOBJECT(sitl, "SIM_", SITL::SIM),
 #endif
 
     // @Group: BARO