diff --git a/src/tools/new_heat_map_tool.js b/src/tools/new_heat_map_tool.js
index a6718eb7170ba4d66b5b504b0c9d3603ca5ca06b..1070a317b697296f9b10e89d0a02705b4452bd3d 100644
--- a/src/tools/new_heat_map_tool.js
+++ b/src/tools/new_heat_map_tool.js
@@ -2,7 +2,7 @@ morpheus.NewHeatMapTool = function() {
 };
 morpheus.NewHeatMapTool.prototype = {
 	toString : function() {
-		return 'New Heat Map (Ctrl+X)';
+		return 'New Heat Map (' + morpheus.Util.COMMAND_KEY + '+X)';
 	},
 	// gui : function() {
 	// return [ {
diff --git a/src/util/util.js b/src/util/util.js
index 8357787e25f24c99c75f29aecfcf1658e4df2440..ef113199d08d1ae5e598272d8d141eede915089d 100644
--- a/src/util/util.js
+++ b/src/util/util.js
@@ -303,6 +303,8 @@ if (typeof navigator !== 'undefined') {
 	morpheus.Util.IS_MAC = navigator.platform.match(/(Mac|iPhone|iPod|iPad)/i) ? true
 			: false;
 }
+morpheus.Util.COMMAND_KEY = morpheus.Util.IS_MAC ? '⌘' : 'Ctrl';
+
 morpheus.Util.hammer = function(el, recognizers) {
 	var hammer = new Hammer(el, {
 		recognizers : []