diff --git a/libraries/SITL/SITL.cpp b/libraries/SITL/SITL.cpp
index a0190e2be5..ef29fec129 100644
--- a/libraries/SITL/SITL.cpp
+++ b/libraries/SITL/SITL.cpp
@@ -54,6 +54,7 @@ const AP_Param::GroupInfo SITL::var_info[] PROGMEM = {
     AP_GROUPINFO("SONAR_GLITCH",  23, SITL,  sonar_glitch, 0),
     AP_GROUPINFO("SONAR_RND",     24, SITL,  sonar_noise, 0),
     AP_GROUPINFO("RC_FAIL",       25, SITL,  rc_fail, 0),
+    AP_GROUPINFO("GPS2_ENABLE",   26, SITL,  gps2_enable, 0),
     AP_GROUPEND
 };
 
diff --git a/libraries/SITL/SITL.h b/libraries/SITL/SITL.h
index acad60af17..758cfd5d91 100644
--- a/libraries/SITL/SITL.h
+++ b/libraries/SITL/SITL.h
@@ -63,6 +63,7 @@ public:
 	AP_Float drift_time;  // period in minutes
     AP_Float engine_mul;  // engine multiplier
 	AP_Int8  gps_disable; // disable simulated GPS
+	AP_Int8  gps2_enable; // enable 2nd simulated GPS
 	AP_Int8  gps_delay;   // delay in samples
     AP_Int8  gps_type;    // see enum GPSType
     AP_Float gps_byteloss;// byte loss as a percent