diff --git a/python_payload/demo_worms.py b/python_payload/demo_worms.py
index 066b66897ee40a46f4de1d2c48ae1345207f2f8e..8784a3860b93cc9247c6ece29ea57c0e4fd3b760 100644
--- a/python_payload/demo_worms.py
+++ b/python_payload/demo_worms.py
@@ -2,6 +2,7 @@ import hardware
 import random
 import time
 import math
+import event
 
 def xy_from_polar(r,deg):
     #rad = deg/180*math.pi