diff --git a/lib/OpenLayers/Util.js b/lib/OpenLayers/Util.js
index 377a9fa94d..5ff2830475 100644
--- a/lib/OpenLayers/Util.js
+++ b/lib/OpenLayers/Util.js
@@ -707,7 +707,8 @@ Array.prototype.indexOf = function(element) {
     return index;    
 }
 
-/**
+/** NOTE: Works only with integer values does *not* work with floats!
+ * 
  * @param {int} sig
  * 
  * @returns The number, rounded to the specified number of significant digits.