diff --git a/examples/heart_rate_server.py b/examples/heart_rate_server.py
index c4f3dfe..fad809f 100644
--- a/examples/heart_rate_server.py
+++ b/examples/heart_rate_server.py
@@ -106,7 +106,7 @@ async def main():
                 AsyncRunner.spawn(
                     device.notify_subscriber(
                         connection,
-                        heart_rate_service.heart_rate_measurement_characteristic
+                        heart_rate_service.heart_rate_measurement_characteristic,
                     )
                 )
 
diff --git a/tasks.py b/tasks.py
index 6df5a8b..fab7cf1 100644
--- a/tasks.py
+++ b/tasks.py
@@ -125,7 +125,7 @@ def lint(ctx, disable='C,R', errors_only=False):
     print(f">>> Running the linter{qualifier}...")
     try:
         ctx.run(f"pylint {' '.join(options)} bumble apps examples tasks.py")
-        print("The linter is happy. ✅ 😊 🐝'")
+        print("The linter is happy. ✅ 😊 🐝")
     except UnexpectedExit as exc:
         print("Please check your code against the linter messages. ❌")
         raise Exit(code=1) from exc
diff --git a/web/scanner/scanner.py b/web/scanner/scanner.py
index e498f7a..9ff6aba 100644
--- a/web/scanner/scanner.py
+++ b/web/scanner/scanner.py
@@ -67,6 +67,7 @@ class Scanner:
         self.scan_entries[advertisement.address] = self.ScanEntry(advertisement)
         self.emit_update()
 
+
 # -----------------------------------------------------------------------------
 def main(hci_source, hci_sink):
     return Scanner(hci_source, hci_sink)
diff --git a/web/speaker/speaker.py b/web/speaker/speaker.py
index 4157981..2b8ce00 100644
--- a/web/speaker/speaker.py
+++ b/web/speaker/speaker.py
@@ -172,9 +172,7 @@ class Speaker:
         connection.on('disconnection', self.on_bluetooth_disconnection)
         peer_name = '' if connection.peer_name is None else connection.peer_name
         peer_address = connection.peer_address.to_string(False)
-        self.emit(
-            'connection', {'peer_name': peer_name, 'peer_address': peer_address}
-        )
+        self.emit('connection', {'peer_name': peer_name, 'peer_address': peer_address})
 
     def on_bluetooth_disconnection(self, reason):
         print(f'Disconnection ({reason})')