diff --git a/AntennaTracker/Parameters.cpp b/AntennaTracker/Parameters.cpp
index 8969ec84fc..c33f55682d 100644
--- a/AntennaTracker/Parameters.cpp
+++ b/AntennaTracker/Parameters.cpp
@@ -284,7 +284,7 @@ const AP_Param::Info Tracker::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: BRD_
diff --git a/AntennaTracker/Tracker.h b/AntennaTracker/Tracker.h
index aa74fa3d00..835081b433 100644
--- a/AntennaTracker/Tracker.h
+++ b/AntennaTracker/Tracker.h
@@ -86,7 +86,7 @@ private:
     AP_Logger logger;
 
 #if CONFIG_HAL_BOARD == HAL_BOARD_SITL
-    SITL::SITL sitl;
+    SITL::SIM sitl;
 #endif
     
     /**