diff -urNp -x '*.orig' brltty-6.1.org/Bindings/Python/brlapi.pyx brltty-6.1/Bindings/Python/brlapi.pyx
--- brltty-6.1.org/Bindings/Python/brlapi.pyx	2020-04-05 12:35:34.000000000 +0200
+++ brltty-6.1/Bindings/Python/brlapi.pyx	2021-03-02 22:36:22.870140488 +0100
@@ -652,7 +652,7 @@ cdef class Connection:
 		if (type(dots) == unicode):
 			dots = dots.encode('latin1')
 		if (len(dots) < dispSize):
-			dots = dots + b"".center(dispSize - len(dots), '\0')
+			dots = dots + "".center(dispSize - len(dots), '\0')
 		c_dots = dots
 		c_udots = <unsigned char *>c_dots
 		with nogil: