diff --git a/layers/tacotron.py b/layers/tacotron.py
index b5b6e132..329fdb11 100644
--- a/layers/tacotron.py
+++ b/layers/tacotron.py
@@ -399,8 +399,7 @@ class Decoder(nn.Module):
                 self.memory_input = torch.cat([
                     new_memory, self.memory_input[:, :(
                         self.memory_size - self.r) * self.memory_dim].clone()
-                ],
-                    dim=-1)
+                ], dim=-1)
             else:
                 # memory queue size smaller than number of frames per decoder iter
                 self.memory_input = new_memory[:, :self.memory_size * self.memory_dim]
diff --git a/tests/symbols_tests.py b/tests/symbols_tests.py
index 9bec0f18..d35e887e 100644
--- a/tests/symbols_tests.py
+++ b/tests/symbols_tests.py
@@ -1,9 +1,8 @@
 import unittest
 
 from utils.text import phonemes
-from collections import Counter
 
 class SymbolsTest(unittest.TestCase):
-    def test_uniqueness(self):
+    def test_uniqueness(self):  #pylint: disable=no-self-use
         assert sorted(phonemes) == sorted(list(set(phonemes))), " {} vs {} ".format(len(phonemes), len(set(phonemes)))
         
\ No newline at end of file
diff --git a/tests/test_loader.py b/tests/test_loader.py
index dd23e530..9d151820 100644
--- a/tests/test_loader.py
+++ b/tests/test_loader.py
@@ -138,8 +138,8 @@ class TestTTSDataset(unittest.TestCase):
                 # there is a slight difference between two matrices.
                 # TODO: Check this assert cond more in detail.
                 assert abs((abs(mel.T)
-                        - abs(mel_dl[:-1])
-                        ).sum()) < 1e-5, (abs(mel.T)- abs(mel_dl[:-1])).sum()
+                            - abs(mel_dl[:-1])
+                            ).sum()) < 1e-5, (abs(mel.T) - abs(mel_dl[:-1])).sum()
 
                 # check mel-spec correctness
                 mel_spec = mel_input[0].cpu().numpy()