diff --git a/daemon/core/api/grpc/client.py b/daemon/core/api/grpc/client.py
index 4ea3332a..a1559d64 100644
--- a/daemon/core/api/grpc/client.py
+++ b/daemon/core/api/grpc/client.py
@@ -160,12 +160,12 @@ def throughput_listener(
     stream: Any, handler: Callable[[wrappers.ThroughputsEvent], None]
 ) -> None:
     """
-        Listen for throughput events and provide them to the handler.
+    Listen for throughput events and provide them to the handler.
 
-        :param stream: grpc stream that will provide events
-        :param handler: function that handles an event
-        :return: nothing
-        """
+    :param stream: grpc stream that will provide events
+    :param handler: function that handles an event
+    :return: nothing
+    """
     try:
         for event_proto in stream:
             event = wrappers.ThroughputsEvent.from_proto(event_proto)
diff --git a/daemon/core/api/grpc/grpcutils.py b/daemon/core/api/grpc/grpcutils.py
index 5d8d7ceb..26f2d670 100644
--- a/daemon/core/api/grpc/grpcutils.py
+++ b/daemon/core/api/grpc/grpcutils.py
@@ -117,7 +117,7 @@ def link_iface(iface_proto: core_pb2.Interface) -> InterfaceData:
 
 
 def add_link_data(
-    link_proto: core_pb2.Link
+    link_proto: core_pb2.Link,
 ) -> Tuple[InterfaceData, InterfaceData, LinkOptions]:
     """
     Convert link proto to link interfaces and options data.
diff --git a/daemon/core/gui/coreclient.py b/daemon/core/gui/coreclient.py
index 6f098118..cd33aeca 100644
--- a/daemon/core/gui/coreclient.py
+++ b/daemon/core/gui/coreclient.py
@@ -753,7 +753,7 @@ class CoreClient:
         return self.client.get_config_service_rendered(self.session.id, node_id, name)
 
     def get_config_service_configs_proto(
-        self
+        self,
     ) -> List[configservices_pb2.ConfigServiceConfig]:
         config_service_protos = []
         for node in self.session.nodes.values():
diff --git a/daemon/core/gui/graph/edges.py b/daemon/core/gui/graph/edges.py
index 82fd0b97..8bb97962 100644
--- a/daemon/core/gui/graph/edges.py
+++ b/daemon/core/gui/graph/edges.py
@@ -56,7 +56,7 @@ def node_label_positions(
     src_x: int, src_y: int, dst_x: int, dst_y: int
 ) -> Tuple[Tuple[float, float], Tuple[float, float]]:
     v_x, v_y = dst_x - src_x, dst_y - src_y
-    v_len = math.sqrt(v_x ** 2 + v_y ** 2)
+    v_len = math.sqrt(v_x**2 + v_y**2)
     if v_len == 0:
         u_x, u_y = 0.0, 0.0
     else:
@@ -147,7 +147,7 @@ class Edge:
         perp_m = -1 / m
         b = mp_y - (perp_m * mp_x)
         # get arc x and y
-        offset = math.sqrt(self.arc ** 2 / (1 + (1 / m ** 2)))
+        offset = math.sqrt(self.arc**2 / (1 + (1 / m**2)))
         arc_x = mp_x
         if self.arc >= 0:
             arc_x += offset
diff --git a/daemon/tests/test_utils.py b/daemon/tests/test_utils.py
index 5a4f25a4..21d092ac 100644
--- a/daemon/tests/test_utils.py
+++ b/daemon/tests/test_utils.py
@@ -9,7 +9,7 @@ class TestUtils:
         no_args = "()"
         one_arg = "('one',)"
         two_args = "('one', 'two')"
-        unicode_args = u"('one', 'two', 'three')"
+        unicode_args = "('one', 'two', 'three')"
 
         # when
         no_args = utils.make_tuple_fromstr(no_args, str)