diff --git a/src/util.js b/src/util.js
index 262d6e95..4afe5693 100644
--- a/src/util.js
+++ b/src/util.js
@@ -133,4 +133,5 @@ module.exports = {
   setFileNameTitle,
   promptTimeOffset,
   generateColor,
+  filenamify,
 };