diff --git a/apps/speedalt/settings.js b/apps/speedalt/settings.js
index 01de13c27..3f4d6303f 100644
--- a/apps/speedalt/settings.js
+++ b/apps/speedalt/settings.js
@@ -19,6 +19,12 @@
     writeSettings();
   }
 
+  function setUnitsDist(d,u) {
+    settings.dist = d;
+    settings.dist_unit = u;
+    writeSettings();
+  }
+
   function setColour(c) {
     settings.colour = c;
     writeSettings();
@@ -43,9 +49,9 @@
     'Knots (spd)' : function() { setUnits(1.852,'knots'); },
     'Mph (spd)' : function() { setUnits(1.60934,'mph'); },
     'm/s (spd)' : function() { setUnits(3.6,'m/s'); },
-    'Km (dist)' : function() { setUnits(1000,'km'); },
-    'Miles (dist)' : function() { setUnits(1609.344,'miles'); },
-    'Nm (dist)' : function() { setUnits(1852.001,'nm'); },
+    'Km (dist)' : function() { setUnitsDist(1000,'km'); },
+    'Miles (dist)' : function() { setUnitsDist(1609.344,'miles'); },
+    'Nm (dist)' : function() { setUnitsDist(1852.001,'nm'); },
     'Meters (alt)' : function() { setUnitsAlt(1,'m'); },
     'Feet (alt)' : function() { setUnitsAlt(0.3048,'feet'); }
   };