diff --git a/libraries/SITL/SITL.cpp b/libraries/SITL/SITL.cpp
index dd49aa8a82..c2be929994 100644
--- a/libraries/SITL/SITL.cpp
+++ b/libraries/SITL/SITL.cpp
@@ -66,6 +66,9 @@ const AP_Param::GroupInfo SITL::var_info[] PROGMEM = {
     AP_GROUPINFO("FLOW_RATE",     35, SITL,  flow_rate, 10),
     AP_GROUPINFO("FLOW_DELAY",    36, SITL,  flow_delay, 0),
     AP_GROUPINFO("GPS_DRIFTALT",  37, SITL,  gps_drift_alt, 0),
+    AP_GROUPINFO("BARO_DELAY",    38, SITL,  baro_delay, 0),
+    AP_GROUPINFO("MAG_DELAY",     39, SITL,  mag_delay, 0),
+    AP_GROUPINFO("WIND_DELAY",    40, SITL,  wind_delay, 0),
     AP_GROUPEND
 };
 
diff --git a/libraries/SITL/SITL.h b/libraries/SITL/SITL.h
index 411d1721bb..11f1de26bb 100644
--- a/libraries/SITL/SITL.h
+++ b/libraries/SITL/SITL.h
@@ -91,7 +91,11 @@ public:
     AP_Float wind_direction;
     AP_Float wind_turbulance;
     AP_Float gps_drift_alt;
-    
+
+    AP_Int16  baro_delay; // barometer data delay in ms
+    AP_Int16  mag_delay; // magnetometer data delay in ms
+    AP_Int16  wind_delay; // windspeed data delay in ms
+
 	void simstate_send(mavlink_channel_t chan);
 
     void Log_Write_SIMSTATE(DataFlash_Class &dataflash);