diff --git a/tests/test_double.py b/tests/test_double.py
index 6cfedde1fefe3405b75f97924be25e24204c83a2..041a060ca61ff92dc7117e6fd64572f269e249ab 100644
--- a/tests/test_double.py
+++ b/tests/test_double.py
@@ -30,9 +30,11 @@ def setup_module():
     if len(clean) > 0:
         clean.delete()
 
+
 def teardown_module():
     setup_module()
 
+
 def test_nan():
     p = db.Property(name="TestDoubleProperty", datatype=db.DOUBLE).insert()
     rt = db.RecordType(name="TestRecordType").add_property(name="TestDoubleProperty",
@@ -41,5 +43,6 @@ def test_nan():
     test1 = db.execute_query("FIND TestRecordType", unique=True)
     assert math.isnan(test1.get_property("TestDoubleProperty").value)
 
-    test2 = db.execute_query("FIND TestRecordType WITH TestDoubleProperty = NaN", unique=True)
+    test2 = db.execute_query(
+        "FIND TestRecordType WITH TestDoubleProperty = NaN", unique=True)
     assert math.isnan(test1.get_property("TestDoubleProperty").value)
diff --git a/tests/test_file.py b/tests/test_file.py
index f0f616ca85887a7f8840e530bd8594b7dfdae0c0..013a470d21dd62b278ed84d8aa4047e31f84c79d 100644
--- a/tests/test_file.py
+++ b/tests/test_file.py
@@ -501,9 +501,9 @@ def test_insert_files_in_dir_error1():
 @with_setup(setup, teardown)
 def test_insert_files_in_dir_with_symlink():
     path = get_config().get("IntegrationTests",
-                "test_files.test_insert_files_in_dir.local") + "testfolder/"
+                            "test_files.test_insert_files_in_dir.local") + "testfolder/"
     path_on_server = get_config().get("IntegrationTests",
-                "test_files.test_insert_files_in_dir.server") + "testfolder/"
+                                      "test_files.test_insert_files_in_dir.server") + "testfolder/"
     try:
 
         # create file in a server-readable directory
@@ -578,9 +578,9 @@ def test_insert_files_in_dir_with_symlink():
 @with_setup(None, teardown)
 def test_insert_files_in_dir():
     path = get_config().get("IntegrationTests",
-                "test_files.test_insert_files_in_dir.local") + "testfolder/"
+                            "test_files.test_insert_files_in_dir.local") + "testfolder/"
     path_on_server = get_config().get("IntegrationTests",
-                "test_files.test_insert_files_in_dir.server") + "testfolder/"
+                                      "test_files.test_insert_files_in_dir.server") + "testfolder/"
     try:
         os.makedirs(path)
         os.makedirs(path + "subfolder/")
diff --git a/tests/test_permissions.py b/tests/test_permissions.py
index 7a9d3b879a8357bcde1d8bf357adba25084332f0..a0496679efc9cfb3ee6e1133997b04e2e4af953b 100644
--- a/tests/test_permissions.py
+++ b/tests/test_permissions.py
@@ -1256,7 +1256,6 @@ def test_check_entity_acl_roles():
         db.administration.set_server_property(
             "CHECK_ENTITY_ACL_ROLES_MODE", "MUST")
 
-
     p = db.Property(name="TestP", datatype=db.TEXT,
                     description="test_check_entity_acl_roles").insert()