diff --git a/nixos/modules/misc/ids.nix b/nixos/modules/misc/ids.nix
index 89ae647dc3d..875f5943401 100644
--- a/nixos/modules/misc/ids.nix
+++ b/nixos/modules/misc/ids.nix
@@ -513,7 +513,7 @@
       xtreemfs = 212;
       calibre-server = 213;
       bepasty = 215;
-      pumpio = 216;
+      # pumpio = 216; # unused, removed 2018-02-24
       nm-openvpn = 217;
       mathics = 218;
       ejabberd = 219;