diff --git a/pkgs/applications/science/electronics/tkgate/1.x.nix b/pkgs/applications/science/electronics/tkgate/1.x.nix
index 7c04c85fdb7e..07c266c62c52 100644
--- a/pkgs/applications/science/electronics/tkgate/1.x.nix
+++ b/pkgs/applications/science/electronics/tkgate/1.x.nix
@@ -33,6 +33,6 @@ stdenv.mkDerivation rec {
     homepage = "http://www.tkgate.org/";
     license = "GPLv2+";
     maintainers = [ stdenv.lib.maintainers.simons ];
-    platforms = stdenv.lib.platforms.linux;
+    hydraPlatforms = stdenv.lib.platforms.linux;
   };
 }
diff --git a/pkgs/applications/science/electronics/tkgate/2.x.nix b/pkgs/applications/science/electronics/tkgate/2.x.nix
index 36b6f125eca3..fdb9e9b56929 100644
--- a/pkgs/applications/science/electronics/tkgate/2.x.nix
+++ b/pkgs/applications/science/electronics/tkgate/2.x.nix
@@ -27,8 +27,6 @@ stdenv.mkDerivation rec {
     description = "Event driven digital circuit simulator with a TCL/TK-based graphical editor";
     homepage = "http://www.tkgate.org/";
     license = "GPLv2+";
-    maintainers = [ stdenv.lib.maintainers.simons ];
-    platforms = stdenv.lib.platforms.linux;
     broken = true;
   };
 }