diff --git a/src/util.py b/src/util.py
--- a/src/util.py
+++ b/src/util.py
@@ -6,8 +6,6 @@ def progress(i, n, i0=0):
 		i*=-1
 		n*=-1
 		i0*=-1
-	assert i0<=i<n
+	assert i0<=i<n, (i0,i,n)
 	percentage=_progress(i,n,i0)
-	if percentage>_progress(i-1,n,i0):
-		print(r"{0}%".format(percentage),end="")
-		if percentage==100: print()
+	print("{0}%".format(percentage),end="\r")