--- a/game/glitch.rpy
+++ b/game/glitch.rpy
@@ -51,7 +51,7 @@ init python:
             if nslices is None:
                 nslices = min(int(cheight/minbandheight), randomobj.randrange(10, 21))
 
-            theights = sorted(randomobj.randrange(cheight+1) for k in range(nslices)) # y coordinates demarcating all the strips
+            theights = sorted(randomobj.randrange(int(cheight)+1) for k in range(nslices)) # y coordinates demarcating all the strips
             offt = 0 # next strip's lateral offset
             fheight = 0 # sum of the size of all the strips added this far
             while fheight<cheight: