diff --git a/pyvlx/api/api_event.py b/pyvlx/api/api_event.py
index ea45b857..c21a36c1 100644
--- a/pyvlx/api/api_event.py
+++ b/pyvlx/api/api_event.py
@@ -22,12 +22,12 @@ def __init__(self, pyvlx: "PyVLX", timeout_in_seconds: int = 10):
         self.timeout_handle: Optional[asyncio.TimerHandle] = None
 
     async def do_api_call(self) -> None:
-        """Start. Sending and waiting for answer."""        
+        """Start. Sending and waiting for answer."""
         # We check for connection before entering the semaphore section
         # because otherwise we might try to connect, which calls this, and we get stuck on
         # the semaphore.
         await self.pyvlx.check_connected()
-        
+
         async with self.pyvlx.sem:
             self.pyvlx.connection.register_frame_received_cb(self.response_rec_callback)
             await self.send_frame()
diff --git a/pyvlx/pyvlx.py b/pyvlx/pyvlx.py
index ad293ba0..1a17b9ae 100644
--- a/pyvlx/pyvlx.py
+++ b/pyvlx/pyvlx.py
@@ -41,7 +41,7 @@ def __init__(self,
         self.version = None
         self.protocol_version = None
         self.klf200 = Klf200Gateway(pyvlx=self)
-        self.sem = asyncio.Semaphore(1) # Limit parallel commands
+        self.sem = asyncio.Semaphore(1)  # Limit parallel commands
 
     async def connect(self) -> None:
         """Connect to KLF 200."""