diff --git a/buildhat/hat.py b/buildhat/hat.py
index 227b054..0a277eb 100644
--- a/buildhat/hat.py
+++ b/buildhat/hat.py
@@ -42,6 +42,11 @@ def get(self):
         return devices
 
     def get_logfile(self):
+        """Get the filename of the debug log (If enabled, None otherwise)
+
+        :return: Path of the debug logfile
+        :rtype: str or None
+        """
         return Device._instance.debug_filename
 
     def get_vin(self):