diff --git a/pkgs/desktops/kde-4.12/default.nix b/pkgs/desktops/kde-4.12/default.nix
index b8e0a828a88..6d3dd46df35 100644
--- a/pkgs/desktops/kde-4.12/default.nix
+++ b/pkgs/desktops/kde-4.12/default.nix
@@ -1,9 +1,11 @@
 { callPackage, callPackageOrig, stdenv, qt48, release ? "4.12.2" }:
 
 let
+  branch = "4.12";
+
   # Need callPackageOrig to avoid infinite cycle
   kde = callPackageOrig ./kde-package {
-    inherit release ignoreList extraSubpkgs callPackage;
+    inherit release branch ignoreList extraSubpkgs callPackage;
   };
 
   # The list of igored individual modules
@@ -36,7 +38,7 @@ kde.modules // kde.individual //
   full = stdenv.lib.attrValues kde.modules;
 
   l10n = callPackage ./l10n {
-    inherit release;
+    inherit release branch;
     inherit (kde.manifest) stable;
   };
 }
diff --git a/pkgs/desktops/kde-4.12/kde-package/default.nix b/pkgs/desktops/kde-4.12/kde-package/default.nix
index 04f798c233a..6b4e1ba0ad8 100644
--- a/pkgs/desktops/kde-4.12/kde-package/default.nix
+++ b/pkgs/desktops/kde-4.12/kde-package/default.nix
@@ -1,5 +1,5 @@
 { callPackage, runCommand, stdenv, fetchurl, qt4, cmake, automoc4
-, release, ignoreList, extraSubpkgs
+, release, branch, ignoreList, extraSubpkgs
 }:
 
 let
@@ -19,6 +19,7 @@ rec {
   # Default meta attribute
   defMeta = {
     homepage = http://www.kde.org;
+    inherit branch;
     platforms = stdenv.lib.platforms.linux;
     inherit (qt4.meta) maintainers;
   };
diff --git a/pkgs/desktops/kde-4.12/l10n/default.nix b/pkgs/desktops/kde-4.12/l10n/default.nix
index c9fab80bffb..fa6406043b1 100644
--- a/pkgs/desktops/kde-4.12/l10n/default.nix
+++ b/pkgs/desktops/kde-4.12/l10n/default.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, kdelibs, gettext, release, stable }:
+{ stdenv, fetchurl, kdelibs, gettext, release, branch, stable }:
 
 let
 
@@ -22,6 +22,7 @@ let
 
       meta = {
         description = "KDE translation for ${lang}";
+        inherit branch;
         license = "GPL";
         platforms = stdenv.lib.platforms.linux;
         inherit (kdelibs.meta) maintainers homepage;