diff --git a/gui/dialogs/location-in-air.xml b/gui/dialogs/location-in-air.xml
index 487369cc7..85151d5dc 100644
--- a/gui/dialogs/location-in-air.xml
+++ b/gui/dialogs/location-in-air.xml
@@ -374,6 +374,11 @@
             setprop("/sim/presets/fix", "");
           }
 
+          var speedRequested = getprop("/sim/presets/airspeed-kt");
+          if (speedRequested > 0) {
+            setprop("/sim/presets/speed-set", "knots");
+          }
+
         </script>
       </binding>
       <binding>