diff --git a/parse/movement.js b/parse/movement.js
index 5de96cd9..5657f053 100644
--- a/parse/movement.js
+++ b/parse/movement.js
@@ -1,6 +1,6 @@
 'use strict'
 
-const createParseMovement = (profile, locations, lines, remarks, polylines) => {
+const createParseMovement = (profile, locations, lines, remarks, polylines = []) => {
 	// todo: what is m.dirGeo? maybe the speed?
 	// todo: what is m.stopL?
 	// todo: what is m.proc? wut?