diff --git a/libraries/SITL/SITL.cpp b/libraries/SITL/SITL.cpp
index 95ef43c334..4fa14de2d5 100644
--- a/libraries/SITL/SITL.cpp
+++ b/libraries/SITL/SITL.cpp
@@ -87,6 +87,7 @@ const AP_Param::GroupInfo SITL::var_info[] = {
     AP_GROUPINFO("GPS_POS",       54, SITL,  gps_pos_offset, 0),
     AP_GROUPINFO("SONAR_POS",     55, SITL,  rngfnd_pos_offset, 0),
     AP_GROUPINFO("FLOW_POS",      56, SITL,  optflow_pos_offset, 0),
+    AP_GROUPINFO("ACC2_BIAS",     57, SITL,  accel2_bias, 0),
     AP_GROUPEND
 };
 
diff --git a/libraries/SITL/SITL.h b/libraries/SITL/SITL.h
index f46e19fe0e..58e21afb9d 100644
--- a/libraries/SITL/SITL.h
+++ b/libraries/SITL/SITL.h
@@ -73,6 +73,7 @@ public:
     AP_Float accel_noise; // in m/s/s
     AP_Float accel2_noise; // in m/s/s
     AP_Vector3f accel_bias; // in m/s/s
+    AP_Vector3f accel2_bias; // in m/s/s
     AP_Float arspd_noise;  // in m/s
     AP_Float arspd_fail;   // pitot tube failure