diff --git a/conf/settings/nps.xml b/conf/settings/nps.xml
index 60dfaa5c98..073e4e0b7f 100644
--- a/conf/settings/nps.xml
+++ b/conf/settings/nps.xml
@@ -6,6 +6,7 @@
     <dl_settings NAME="Sim">
        <dl_setting var="nps_bypass_ahrs" min="0" step="1" max="1" module="nps/nps_autopilot_rotorcraft" shortname="bypass_ahrs" values="No|Yes"/>
        <dl_setting var="nps_bypass_ins" min="0" step="1" max="1" module="nps/nps_autopilot_rotorcraft" shortname="bypass_ins" values="No|Yes"/>
+       <dl_setting var="gps_has_fix" min="0" step="1" max="1" module="subsystems/gps/gps_sim_nps" shortname="gps_fix" values="No|Yes"/>
        <dl_setting var="nps_electrical.supply_voltage" min="0" step="0.1" max="24" module="nps/nps_electrical" shortname="bat_voltage" unit="V"/>
        <dl_setting var="nps_atmosphere.wind_speed" min="0" step="0.1" max="25" module="nps/nps_atmosphere" shortname="wind_speed" unit="m/s"/>
        <dl_setting var="nps_atmosphere.wind_dir" min="0" step="1" max="360" module="nps/nps_atmosphere" shortname="wind_dir" unit="rad" alt_unit="deg"/>
diff --git a/sw/airborne/subsystems/gps/gps_sim_nps.c b/sw/airborne/subsystems/gps/gps_sim_nps.c
index 549630a8d5..546d32d549 100644
--- a/sw/airborne/subsystems/gps/gps_sim_nps.c
+++ b/sw/airborne/subsystems/gps/gps_sim_nps.c
@@ -29,6 +29,7 @@
 #endif
 
 bool_t gps_available;
+bool_t gps_has_fix;
 
 void  gps_feed_value() {
   gps.ecef_pos.x = sensors.gps.ecef_pos.x * 100.;
@@ -75,10 +76,14 @@ void  gps_feed_value() {
   gps.utm_pos.zone = nav_utm_zone0;
 #endif
 
-  gps.fix = GPS_FIX_3D;
+  if (gps_has_fix)
+    gps.fix = GPS_FIX_3D;
+  else
+    gps.fix = GPS_FIX_NONE;
   gps_available = TRUE;
 }
 
 void gps_impl_init() {
   gps_available = FALSE;
+  gps_has_fix = TRUE;
 }
diff --git a/sw/airborne/subsystems/gps/gps_sim_nps.h b/sw/airborne/subsystems/gps/gps_sim_nps.h
index e1dd5fc05d..9c327590a2 100644
--- a/sw/airborne/subsystems/gps/gps_sim_nps.h
+++ b/sw/airborne/subsystems/gps/gps_sim_nps.h
@@ -6,6 +6,7 @@
 #define GPS_NB_CHANNELS 16
 
 extern bool_t gps_available;
+extern bool_t gps_has_fix;
 
 extern void gps_feed_value();