diff --git a/tests/test_core.py b/tests/test_core.py
index 90f8c90b5cfc2f06a32136a8980109b1ddd4f0ad..3a721c69ecf9b11a06b8af1a4e760bd54ef90bd0 100644
--- a/tests/test_core.py
+++ b/tests/test_core.py
@@ -132,7 +132,8 @@ def test_output_results(capsys, tmpdir):
     fmt = "csv"
     quiet = True
     verbose = 0
-    core.output_results(str(output_file), all_seq_digested, fmt, quiet, verbose)
+    core.output_results(str(output_file), all_seq_digested, fmt, quiet,
+                        verbose)
     out, err = capsys.readouterr()
     # Quiet
     assert out == ""
@@ -152,7 +153,8 @@ def test_output_results(capsys, tmpdir):
     fmt = "csv"
     quiet = False
     verbose = 3
-    core.output_results(str(output_file), all_seq_digested, fmt, quiet, verbose)
+    core.output_results(str(output_file), all_seq_digested, fmt, quiet,
+                        verbose)
     out, err = capsys.readouterr()
     assert output_file.read() == "Original_header,No_peptide,Enzyme,Cleaving_"\
                                  "pos,Peptide_size,Peptide_mass,pI,Sequence\n"\
@@ -201,8 +203,8 @@ def test_peptide():
     format_res = pep0.__format__("csv")
     assert format_res == "Test,1,fake_enzyme,3,8,1012.98488,3.29,QWSDESDF"
     format_res = pep2.__format__("tsv")
-    assert format_res == "Test\t1\tfake_enzyme\t2\t8\t1012.98488\t3.29\tQWSDES"\
-                         "DF"
+    assert format_res == "Test\t1\tfake_enzyme\t2\t8\t1012.98488\t3.29\tQWSD"\
+                         "ESDF"
     format_res = pep3.__format__("fasta")
     assert format_res == ">Test_2_fake_enzyme_3_8_1012.98488_3.29\nQWSDESDF"