diff --git a/pkgs/applications/editors/kile/default.nix b/pkgs/applications/editors/kile/default.nix
index 51c58c11cf8c..704b8e1b8249 100644
--- a/pkgs/applications/editors/kile/default.nix
+++ b/pkgs/applications/editors/kile/default.nix
@@ -17,5 +17,6 @@ stdenv.mkDerivation {
     description = "An integrated LaTeX editor for KDE";
     homepage = http://kile.sourceforge.net;
     license = "GPLv2";
+    platforms = stdenv.lib.platforms.linux;
   };
 }
diff --git a/pkgs/applications/misc/k3b/1.0.nix b/pkgs/applications/misc/k3b/1.0.nix
index 7ac483cedea7..bd01174ae599 100644
--- a/pkgs/applications/misc/k3b/1.0.nix
+++ b/pkgs/applications/misc/k3b/1.0.nix
@@ -15,5 +15,6 @@ stdenv.mkDerivation {
   meta = {
     description = "A CD and DVD authoring application for KDE";
     homepage = http://www.k3b.org/;
+    platforms = stdenv.lib.platforms.linux;
   };
 }
diff --git a/pkgs/desktops/kde-3/kdebase/default.nix b/pkgs/desktops/kde-3/kdebase/default.nix
index 814d46291571..6a6a1ea4a1e4 100644
--- a/pkgs/desktops/kde-3/kdebase/default.nix
+++ b/pkgs/desktops/kde-3/kdebase/default.nix
@@ -52,4 +52,6 @@ stdenv.mkDerivation {
 
   # Work around some inexplicable build failure starting in kdebase 3.5.9.
   LDFLAGS = "-L${kdelibs}/lib";
+
+  meta.platforms = stdenv.lib.platforms.linux;
 }
diff --git a/pkgs/desktops/kde-3/kdelibs/default.nix b/pkgs/desktops/kde-3/kdelibs/default.nix
index e191421e5725..69c6c5c332e0 100644
--- a/pkgs/desktops/kde-3/kdelibs/default.nix
+++ b/pkgs/desktops/kde-3/kdelibs/default.nix
@@ -49,4 +49,6 @@ stdenv.mkDerivation {
     --x-includes=${xlibs.libX11}/include
     --x-libraries=${xlibs.libX11}/lib
   '';
+
+  meta.platforms = stdenv.lib.platforms.linux;
 }
diff --git a/pkgs/top-level/release.nix b/pkgs/top-level/release.nix
index 5f4fb2a8335c..09be02ba915b 100644
--- a/pkgs/top-level/release.nix
+++ b/pkgs/top-level/release.nix
@@ -436,13 +436,6 @@ with (import ./release-lib.nix);
   };
   */
 
-  kde3 = {
-    kdebase = linux;
-    kdelibs = linux;
-    k3b = linux;
-    kile = linux;
-  };
-
   linuxPackages_2_6_25 = {
     aufs = linux;
     kernel = linux;