diff --git a/lib/filters.js b/lib/filters.js
index d4853618..8adeb13e 100644
--- a/lib/filters.js
+++ b/lib/filters.js
@@ -113,6 +113,17 @@ export const refFilter = (data, { domain, domainOnly, raw }) => {
   return Object.keys(map).map(key => ({ x: key, y: map[key], w: links[key] }));
 };
 
+export const eventTypeFilter = (data, types) => {
+  if (!types || types.length === 0) {
+    return data;
+  }
+
+  return data.filter(({ x }) => {
+    const [event] = x.split('\t');
+    return types.some(type => type === event);
+  });
+};
+
 export const browserFilter = data =>
   data.map(({ x, y }) => ({ x: BROWSERS[x] || x, y })).filter(({ x }) => x);