diff --git a/pkgs/desktops/kde-4.12/kdepim.nix b/pkgs/desktops/kde-4.12/kdepim.nix
index 4f364648d238..0f5d868837e5 100644
--- a/pkgs/desktops/kde-4.12/kdepim.nix
+++ b/pkgs/desktops/kde-4.12/kdepim.nix
@@ -8,9 +8,9 @@ kde {
 # TODO: LinkGrammar
 
   buildInputs =
-    [ kdepimlibs boost shared_desktop_ontologies akonadi nepomuk_widgets
-      libxslt cyrus_sasl gpgme libassuan grantlee prison kactivities
-      libXScrnSaver qjson
+    [ kdepimlibs boost boost.lib shared_desktop_ontologies akonadi
+      nepomuk_widgets libxslt cyrus_sasl gpgme libassuan grantlee prison
+      kactivities libXScrnSaver qjson
     ];
 
   nativeBuildInputs = [ pkgconfig ];
diff --git a/pkgs/desktops/kde-4.12/kdepimlibs.nix b/pkgs/desktops/kde-4.12/kdepimlibs.nix
index ca0af9400b11..90d2717b8805 100644
--- a/pkgs/desktops/kde-4.12/kdepimlibs.nix
+++ b/pkgs/desktops/kde-4.12/kdepimlibs.nix
@@ -6,7 +6,7 @@ kde {
   nativeBuildInputs = [ pkgconfig ];
 
   buildInputs =
-    [ boost gpgme libical libxslt qjson prison
+    [ boost boost.lib gpgme libical libxslt qjson prison
       openldap cyrus_sasl akonadi shared_desktop_ontologies
     ];