diff --git a/gps.xml.b3 b/gps.xml.b3
index 9ee4e24..0b02145 100644
--- a/gps.xml.b3
+++ b/gps.xml.b3
@@ -95,6 +95,7 @@
 
   <gll_features
        EnableNicAutoSwitch="true"
+       ConstellationAutoSwitchOffNavOnly="true"
   />
 
 </glgps>
diff --git a/gps_user.xml.b3 b/gps_user.xml.b3
index 74a7178..e2d2e8b 100644
--- a/gps_user.xml.b3
+++ b/gps_user.xml.b3
@@ -94,6 +94,7 @@
 
   <gll_features
        EnableNicAutoSwitch="true"
+       ConstellationAutoSwitchOffNavOnly="true"
   />
 
 </glgps>