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-rw-r--r--test/test_bier.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/test/test_bier.py b/test/test_bier.py
index 793c8ca0362..b188c364a7a 100644
--- a/test/test_bier.py
+++ b/test/test_bier.py
@@ -167,7 +167,7 @@ class TestBier(VppTestCase):
byte_val = scapy.compat.chb(1 << (bp - 1) % 8)
byte_pos = n_bytes - (((bp - 1) // 8) + 1)
byte_array[byte_pos] = byte_val
- bitstring = ''.join([scapy.compat.chb(x) for x in byte_array])
+ bitstring = b''.join([scapy.compat.chb(x) for x in byte_array])
self.assertEqual(len(bitstring), len(bier_hdr.BitString))
self.assertEqual(bitstring, bier_hdr.BitString)