diff --git a/tests/test_crypto_tools.py b/tests/test_crypto_tools.py
index 7534f891a98a3c3663aeb585b54c137a0347a211..10c247210011d78c929799da30d69170fd91474d 100644
--- a/tests/test_crypto_tools.py
+++ b/tests/test_crypto_tools.py
@@ -38,7 +38,7 @@ def test_gen_checksum(pubkey, checksum):
         (
             "J4c8CARmP9vAFNGtHRuzx14zvxojyRWHW2darguVqjtX",
             "KA",
-            "Error: Wrong checksum for following public key: J4c8CARmP9vAFNGtHRuzx14zvxojyRWHW2darguVqjtX",
+            "Error: public key 'J4c8CARmP9vAFNGtHRuzx14zvxojyRWHW2darguVqjtX' does not match checksum 'KA'.\nPlease verify the public key.\n",
         ),
     ],
 )
@@ -49,7 +49,7 @@ def test_validate_checksum(pubkey, checksum, expected, capsys):
     else:
         with pytest.raises(SystemExit) as pytest_exit:
             test = crypto_tools.validate_checksum(pubkey_with_ck)
-        assert capsys.readouterr() == expected
+        assert capsys.readouterr().out == expected
         assert pytest_exit.type == SystemExit
 
 
@@ -60,14 +60,14 @@ def test_validate_checksum(pubkey, checksum, expected, capsys):
         ("J4c8CARmP9vAFNGtHRuzx14zvxojyRWHW2darguVqjtX:KAv", True, True),
         ("J4c8CARmP9vAFNGtHRuzx14zvxojyRWHW2darguVqjtX", True, False),
         ("Youpi", False, None),
-        ("Youpi", True, "Error: bad format for following public key: Youpi"),
+        ("Youpi", True, "Error: bad format for following public key: Youpi\n"),
     ],
 )
 def test_check_pubkey_format(pubkey, display_error, expected, capsys):
     if isinstance(expected, str):
         with pytest.raises(SystemExit) as pytest_exit:
             test = crypto_tools.check_pubkey_format(pubkey, display_error)
-        assert capsys.readouterr() == expected
+        assert capsys.readouterr().out == expected
         assert pytest_exit.type == SystemExit
     else:
         assert expected == crypto_tools.check_pubkey_format(pubkey, display_error)
diff --git a/tests/test_unit_tx.py b/tests/test_unit_tx.py
index 57379c10f7ab981f0092d974f5f2325af62894cb..89278b6faac69649ff9a787f7e3d64977d14b030 100644
--- a/tests/test_unit_tx.py
+++ b/tests/test_unit_tx.py
@@ -193,7 +193,7 @@ def test_compute_amounts_errors(capsys):
                 trial[1],
             )
         assert pytest_exit.type == SystemExit
-        expected_error = "Error: amount {0} is too low.".format(trial[0][0])
+        expected_error = "Error: amount {0} is too low.\n".format(trial[0][0])
         assert capsys.readouterr().out == expected_error
 
 
@@ -1347,9 +1347,9 @@ def test_check_transaction_values_errors(
     assert pytest_exit.type == SystemExit
     display = capsys.readouterr()
     if comment.find("Wrong_Char_") != -1:
-        assert display == "Error: the format of the comment is invalid"
+        assert display.out == "Error: the format of the comment is invalid\n"
     elif len(comment) > tx.MAX_COMMENT_LENGTH:
-        assert display == "Error: the format of the comment is invalid"
+        assert display.out == "Error: Comment is too long\n"
     elif "Wrong_Pubkey" in outputAddresses:
         assert display.out.find("Error: bad format for following public key:") != -1
     elif outputBackChange:
@@ -1360,7 +1360,6 @@ def test_check_transaction_values_errors(
             display.out.find("pubkey doesn’t have enough money for this transaction.")
             != -1
         )
-    assert result == ""
 
 
 # test generate_unlocks()