diff --git a/PlayerState.py b/PlayerState.py
index 8c00458..581998b 100644
--- a/PlayerState.py
+++ b/PlayerState.py
@@ -62,8 +62,8 @@ class PlayerState:
             self.enableAdvanceTimeRight()
 
     def timeAdvanceLeft(self):
-        choiceList = [True] * config.BONUS_TIME_ACTIVATION_PROBABILITY * 100 \
-                     + [False] * (1 - config.BONUS_TIME_ACTIVATION_PROBABILITY) * 100
+        choiceList = [True] * int(config.BONUS_TIME_ACTIVATION_PROBABILITY * 100) \
+                     + [False] * int((1 - config.BONUS_TIME_ACTIVATION_PROBABILITY) * 100)
 
         if random.choice(choiceList):
             self.enableAdvanceTimeLeft()