diff --git a/ethereum/tests/test_abi.py b/ethereum/tests/test_abi.py
index 03fd3933a..7c371a5b3 100644
--- a/ethereum/tests/test_abi.py
+++ b/ethereum/tests/test_abi.py
@@ -34,7 +34,7 @@ def test_abi_encode_single_int():
 
 def test_abi_encode_single_ureal():
     assert abi.encode_single(['ureal', '128x128', []], 0) == (b'\x00'*32)
-    assert abi.encode_single(['ureal', '128x128', []], 1.125) == (b'\x00'*15 + b'\x01\x20' + '\x00'*15)
+    assert abi.encode_single(['ureal', '128x128', []], 1.125) == (b'\x00'*15 + b'\x01\x20' + b'\x00'*15)
     assert abi.encode_single(['ureal', '128x128', []], 2**127-1) == (b'\x7f' + b'\xff'*15 + b'\x00'*16)
 
 def test_abi_encode_single_real():
@@ -51,10 +51,10 @@ def test_abi_decode_single_hash():
 
 def test_abi_decode_single_bytes():
     typ = ['bytes', '8', []]
-    assert (b'\x01\x02' + b'\x00'*6) == abi.decode_single(typ, abi.encode_single(typ, '\x01\x02'))
+    assert (b'\x01\x02' + b'\x00'*6) == abi.decode_single(typ, abi.encode_single(typ, b'\x01\x02'))
 
     typ = ['bytes', '', []]
-    assert b'\x01\x02' == abi.decode_single(typ, abi.encode_single(typ, '\x01\x02'))
+    assert b'\x01\x02' == abi.decode_single(typ, abi.encode_single(typ, b'\x01\x02'))
 
 def test_abi_encode_single_prefixed_address():
     prefixed_address = '0x' + '0'*40