diff --git a/src/ol/control/scalelinecontrol.js b/src/ol/control/scalelinecontrol.js
index 039657828a..7efa6247f0 100644
--- a/src/ol/control/scalelinecontrol.js
+++ b/src/ol/control/scalelinecontrol.js
@@ -13,6 +13,7 @@ goog.require('ol.TransformFunction');
 goog.require('ol.control.Control');
 goog.require('ol.css');
 goog.require('ol.proj');
+goog.require('ol.proj.METERS_PER_UNIT');
 goog.require('ol.proj.Units');
 goog.require('ol.sphere.NORMAL');
 
@@ -227,20 +228,18 @@ ol.control.ScaleLine.prototype.updateElement_ = function() {
     pointResolution *= Math.PI * cosLatitude * ol.sphere.NORMAL.radius / 180;
     projectionUnits = ol.proj.Units.METERS;
 
-  } else if ((projectionUnits == ol.proj.Units.FEET ||
-      projectionUnits == ol.proj.Units.METERS) &&
+  } else if (projectionUnits != ol.proj.Units.DEGREES &&
       units == ol.control.ScaleLineUnits.DEGREES) {
 
-    // Convert pointResolution from meters or feet to degrees
+    // Convert pointResolution from other units to degrees
     if (goog.isNull(this.toEPSG4326_)) {
       this.toEPSG4326_ = ol.proj.getTransformFromProjections(
           projection, ol.proj.get('EPSG:4326'));
     }
     cosLatitude = Math.cos(goog.math.toRadians(this.toEPSG4326_(center)[1]));
     var radius = ol.sphere.NORMAL.radius;
-    if (projectionUnits == ol.proj.Units.FEET) {
-      radius /= 0.3048;
-    }
+    goog.asserts.assert(goog.isDef(ol.proj.METERS_PER_UNIT[projectionUnits]));
+    radius /= ol.proj.METERS_PER_UNIT[projectionUnits];
     pointResolution *= 180 / (Math.PI * cosLatitude * radius);
     projectionUnits = ol.proj.Units.DEGREES;