diff --git a/src/ol/control/zoomcontrol.js b/src/ol/control/zoomcontrol.js
index 1cce5fc6a8..a017cfdd5c 100644
--- a/src/ol/control/zoomcontrol.js
+++ b/src/ol/control/zoomcontrol.js
@@ -34,7 +34,7 @@ ol.control.Zoom = function(opt_options) {
 
   var zoomInLabel = goog.isDef(options.zoomInLabel) ? options.zoomInLabel : '+',
       zoomOutLabel =
-          goog.isDef(options.zoomOutLabel) ? options.zoomOutLabel : '-';
+          goog.isDef(options.zoomOutLabel) ? options.zoomOutLabel : '\u2212';
 
   var inElement = goog.dom.createDom(goog.dom.TagName.A, {
     'href': '#zoomIn',