diff --git a/src/apps/nem/validators.py b/src/apps/nem/validators.py
index c5d11c0e45..6db3402359 100644
--- a/src/apps/nem/validators.py
+++ b/src/apps/nem/validators.py
@@ -50,12 +50,13 @@ def validate_network(network: int) -> int:
 
 def _validate_single_tx(msg: NEMSignTx):
     # ensure exactly one transaction is provided
-    tx_count = bool(msg.transfer) + \
-               bool(msg.provision_namespace) + \
-               bool(msg.mosaic_creation) + \
-               bool(msg.supply_change) + \
-               bool(msg.aggregate_modification) + \
-               bool(msg.importance_transfer)
+    tx_count = \
+        bool(msg.transfer) + \
+        bool(msg.provision_namespace) + \
+        bool(msg.mosaic_creation) + \
+        bool(msg.supply_change) + \
+        bool(msg.aggregate_modification) + \
+        bool(msg.importance_transfer)
     if tx_count == 0:
         raise ValueError('No transaction provided')
     if tx_count > 1:
diff --git a/tests/test_apps.nem.hdnode.py b/tests/test_apps.nem.hdnode.py
index ea109c6550..69db1a6c60 100644
--- a/tests/test_apps.nem.hdnode.py
+++ b/tests/test_apps.nem.hdnode.py
@@ -226,9 +226,9 @@ class TestNemHDNode(unittest.TestCase):
             )
 
             encrypted = node.nem_encrypt(unhexlify(test['public']),
-                             unhexlify(test['iv']),
-                             unhexlify(test['salt']),
-                             unhexlify(test['input']))
+                                         unhexlify(test['iv']),
+                                         unhexlify(test['salt']),
+                                         unhexlify(test['input']))
 
             self.assertEqual(encrypted, unhexlify(test['output']))
 
diff --git a/tests/test_apps.nem.multisig.aggregate_modification.py b/tests/test_apps.nem.multisig.aggregate_modification.py
index 3b145d3a9d..94e222eb2b 100644
--- a/tests/test_apps.nem.multisig.aggregate_modification.py
+++ b/tests/test_apps.nem.multisig.aggregate_modification.py
@@ -52,7 +52,7 @@ class TestNemMultisigAggregateModification(unittest.TestCase):
             "43aa69177018fc3e2bdbeb259c81cddf24be50eef9c5386db51d82386c41475a"))
 
         self.assertEqual(hashlib.sha3_256(t).digest(True),
-                          unhexlify("cc64ca69bfa95db2ff7ac1e21fe6d27ece189c603200ebc9778d8bb80ca25c3c"))
+                         unhexlify("cc64ca69bfa95db2ff7ac1e21fe6d27ece189c603200ebc9778d8bb80ca25c3c"))
 
     def test_nem_transaction_aggregate_modification_relative_change(self):
         # http://bob.nem.ninja:8765/#/aggregate/1fbdae5ba753e68af270930413ae90f671eb8ab58988116684bac0abd5726584
diff --git a/tests/test_apps.nem.multisig.py b/tests/test_apps.nem.multisig.py
index df85f3b7ab..ca82fe1bea 100644
--- a/tests/test_apps.nem.multisig.py
+++ b/tests/test_apps.nem.multisig.py
@@ -45,13 +45,13 @@ class TestNemMultisig(unittest.TestCase):
     def test_nem_multisig_2(self):
         # http://chain.nem.ninja/#/multisig/1016cf3bdd61bd57b9b2b07b6ff2dee390279d8d899265bdc23d42360abe2e6c
         m = _create_provision_msg(NEM_NETWORK_MAINNET,
-                                 59414272,
-                                 20000000,
-                                 59500672,
-                                 "dim",
-                                 "",
-                                 "NAMESPACEWH4MKFMBCVFERDPOOP4FK7MTBXDPZZA",
-                                 5000000000)
+                                  59414272,
+                                  20000000,
+                                  59500672,
+                                  "dim",
+                                  "",
+                                  "NAMESPACEWH4MKFMBCVFERDPOOP4FK7MTBXDPZZA",
+                                  5000000000)
         base_tx = serialize_provision_namespace(m.transaction, m.provision_namespace, unhexlify("a1df5306355766bd2f9a64efdc089eb294be265987b3359093ae474c051d7d5a"))
 
         m = _create_common_msg(NEM_NETWORK_MAINNET,