diff --git a/artiq-full.nix b/artiq-full.nix
index 47deb36..2a5d5cb 100644
--- a/artiq-full.nix
+++ b/artiq-full.nix
@@ -156,12 +156,6 @@ let
               "2" = "apsatellite2";
             };
           };
-          ptb3 = {
-            master = "ptb3master";
-            satellites = {
-              "1" = "ptb3satellite";
-            };
-          };
         ''}
       };
       drtio-ddbs = pkgs.lib.attrsets.mapAttrs'