diff --git a/js/tags.js b/js/tags.js
index 2e8e99f6e6b6f3a15e6a9f35351e9b7fc1f0e18d..cd52fb88e517c0cd3d78d757790592ca075cb475 100644
--- a/js/tags.js
+++ b/js/tags.js
@@ -33,6 +33,8 @@ function Tags() {
 
   tags.init = function(_data, config) {
     data = _data;
+    keywords = [];
+    filterWords = [];
 
     d3.select(".tagcloud").remove()