diff --git a/findmy/reports/reports.py b/findmy/reports/reports.py
index 307db87..14a9f2a 100644
--- a/findmy/reports/reports.py
+++ b/findmy/reports/reports.py
@@ -124,7 +124,7 @@ class LocationReport(HasHashedPublicKey):
 
     @property
     def confidence(self) -> int:
-        """Confidence of the location of this report. Int between 1 and 3"""
+        """Confidence of the location of this report. Int between 1 and 3."""
         # If the payload length is 88, the confidence is the 5th byte, otherwise it's the 6th byte
         if len(self._payload) == 88:
             return self.payload[4]
diff --git a/findmy/util/parsers.py b/findmy/util/parsers.py
index b1abb43..fdd7ecb 100644
--- a/findmy/util/parsers.py
+++ b/findmy/util/parsers.py
@@ -17,5 +17,6 @@ def decode_plist(data: bytes) -> Any:  # noqa: ANN401
     return plistlib.loads(data)
 
 
-def format_hex_byte(byte):
+def format_hex_byte(byte: int) -> str:
+    """Format a byte as a two character hex string in uppercase."""
     return f"{byte:02x}".upper()