diff --git a/src/angularjs-gauge.js b/src/angularjs-gauge.js
index a408e63..7171b39 100644
--- a/src/angularjs-gauge.js
+++ b/src/angularjs-gauge.js
@@ -266,8 +266,8 @@
                 };
 
                 var match = Object.keys(this.options.thresholds)
-                    .filter(function (item) { return isNumber(item) && Number(item) <= value; })
-                    .sort().reverse()[0];
+                    .filter(function (item) { return isNumber(item) && Number(item) <= value })
+                    .sort(function(a,b) {return Number(a) > Number(b);}.reverse()[0];
 
                 return match !== undefined ? this.options.thresholds[match].color || this.getForegroundColor() : this.getForegroundColor();
             },