diff --git a/src/data/Data.js b/src/data/Data.js
index 423bef55b..85afd64f5 100644
--- a/src/data/Data.js
+++ b/src/data/Data.js
@@ -14,7 +14,7 @@ function Data() {
 		}
 	});
 
-	this.expando = jQuery.expando + Math.random();
+	this.expando = jQuery.expando + Data.uid++;
 }
 
 Data.uid = 1;