diff --git a/ethercat.nix b/ethercat.nix
index 501e4b7..ae96c1d 100644
--- a/ethercat.nix
+++ b/ethercat.nix
@@ -4,8 +4,8 @@
   stdenv,
   # interface name (eg. "eth0") or MAC address (eg. "e9:22:a4:62:74:23"). ff:ff:ff:ff:ff:ff means first available NIC
   master_device0 ? "ff:ff:ff:ff:ff:ff",
-  enable-debug-if ? "no",
-  enable-eoe ? "yes",
+  enable-debug-if ? "no", # create debug interface for each master
+  enable-eoe ? "yes", # eoe enable
   kernel
 }: