diff --git a/js/bootstrap-datepicker.js b/js/bootstrap-datepicker.js
index f17de6d1c..6fbbeb3d2 100644
--- a/js/bootstrap-datepicker.js
+++ b/js/bootstrap-datepicker.js
@@ -63,7 +63,7 @@
 				this.push.apply(this, new_array);
 			},
 			clear: function(){
-				this.splice(0);
+				this.length = 0;
 			},
 			copy: function(){
 				var a = new DateArray();