diff --git a/unix/bluetooth_linux.go b/unix/bluetooth_linux.go
index 6e32296..a178a61 100644
--- a/unix/bluetooth_linux.go
+++ b/unix/bluetooth_linux.go
@@ -23,6 +23,7 @@
 	HCI_CHANNEL_USER    = 1
 	HCI_CHANNEL_MONITOR = 2
 	HCI_CHANNEL_CONTROL = 3
+	HCI_CHANNEL_LOGGING = 4
 )
 
 // Socketoption Level