diff --git a/games/ttrs.py b/games/ttrs.py
index dcbae05..51ee92b 100755
--- a/games/ttrs.py
+++ b/games/ttrs.py
@@ -8,6 +8,7 @@ import time
 import enum
 import math
 import collections
+import blup.balance_util
 import blup.frame
 import blup.output
 import random