diff --git a/bumble/device.py b/bumble/device.py
index f9d62b6f..60129ff7 100644
--- a/bumble/device.py
+++ b/bumble/device.py
@@ -945,7 +945,6 @@ class Device(CompositeEventEmitter):
             if isinstance(attribute, Service):
                 self.advertising_data += attribute.get_service_advertising_data()
 
-
         # Set/update the advertising data if the advertising type allows it
         if advertising_type.has_data:
             await self.send_command(HCI_LE_Set_Advertising_Data_Command(
diff --git a/bumble/gatt.py b/bumble/gatt.py
index ef944fd4..48baa51d 100644
--- a/bumble/gatt.py
+++ b/bumble/gatt.py
@@ -210,7 +210,6 @@ class Service(Attribute):
         self.characteristics   = characteristics[:]
         self.primary           = primary
 
-
     def get_service_advertising_data(self):
         """
         Get Service specific advertising data
@@ -218,7 +217,6 @@ class Service(Attribute):
         """
         return b''
 
-
     def __str__(self):
         return f'Service(handle=0x{self.handle:04X}, end=0x{self.end_group_handle:04X}, uuid={self.uuid}){"" if self.primary else "*"}'