diff --git a/APMrover2/system.pde b/APMrover2/system.pde
index d19dbf0c52..46db3d7c03 100644
--- a/APMrover2/system.pde
+++ b/APMrover2/system.pde
@@ -203,7 +203,8 @@ static void init_ardupilot()
 #endif
 	// Do GPS init
 	g_gps = &g_gps_driver;
-	g_gps->init();			// GPS Initialization
+    // GPS initialisation
+	g_gps->init(GPS::GPS_ENGINE_AUTOMOTIVE);
     g_gps->callback = mavlink_delay;
 
 	//mavlink_system.sysid = MAV_SYSTEM_ID;				// Using g.sysid_this_mav
diff --git a/ArduCopter/system.pde b/ArduCopter/system.pde
index 14dad5a4c0..9af7209be1 100644
--- a/ArduCopter/system.pde
+++ b/ArduCopter/system.pde
@@ -218,7 +218,8 @@ static void init_ardupilot()
 
 	// Do GPS init
 	g_gps = &g_gps_driver;
-	g_gps->init();			// GPS Initialization
+    // GPS Initialization
+	g_gps->init(GPS::GPS_ENGINE_AIRBORNE_1G);
     g_gps->callback = mavlink_delay;
 
 	if(g.compass_enabled)
diff --git a/ArduPlane/system.pde b/ArduPlane/system.pde
index ea6d30b5ad..a17f74667e 100644
--- a/ArduPlane/system.pde
+++ b/ArduPlane/system.pde
@@ -180,7 +180,8 @@ static void init_ardupilot()
 
 	// Do GPS init
 	g_gps = &g_gps_driver;
-	g_gps->init();			// GPS Initialization
+    // GPS Initialization
+	g_gps->init(GPS::GPS_ENGINE_AIRBORNE_4G);
     g_gps->callback = mavlink_delay;
 
 	//mavlink_system.sysid = MAV_SYSTEM_ID;				// Using g.sysid_this_mav