diff --git a/src/nwp500/encoding.py b/src/nwp500/encoding.py
index c7f7516..d8ac2f1 100644
--- a/src/nwp500/encoding.py
+++ b/src/nwp500/encoding.py
@@ -345,7 +345,7 @@ def decode_reservation_hex(hex_string: str) -> list[dict[str, int]]:
     - Byte 2: hour (0-23)
     - Byte 3: minute (0-59)
     - Byte 4: mode (operation mode ID)
-    - Byte 5: param (temperature offset by 20°F)
+    - Byte 5: param (target temperature, half-degrees Celsius; °C = param/2)
 
     Args:
         hex_string: Hexadecimal string representing reservation data
@@ -355,7 +355,7 @@ def decode_reservation_hex(hex_string: str) -> list[dict[str, int]]:
 
     Examples:
         >>> decode_reservation_hex("013e061e0478")
-        [{'enable': 1, 'week': 62, 'hour': 6, 'minute': 30, 'mode': 4, 'param':
+        [{'enable': 1, 'week': 62, 'hour': 6, 'min': 30, 'mode': 4, 'param':
         120}]
     """
     data = bytes.fromhex(hex_string)