diff --git a/pkgs/desktops/kde-4.10/kdesdk/kdesdk-thumbnailers.nix b/pkgs/desktops/kde-4.10/kdesdk/kdesdk-thumbnailers.nix
index 782ef72ce5a..f96b0df2b95 100644
--- a/pkgs/desktops/kde-4.10/kdesdk/kdesdk-thumbnailers.nix
+++ b/pkgs/desktops/kde-4.10/kdesdk/kdesdk-thumbnailers.nix
@@ -1,9 +1,11 @@
 { kde, kdelibs, gettext }:
 
 kde {
-#todo: doesn't build
+
   buildInputs = [ kdelibs gettext ];
 
+  patches = [ ./thumbnailers-add-subdirectory.patch ];
+
   meta = {
     description = "PO file format thumbnailer";
   };
diff --git a/pkgs/desktops/kde-4.10/kdesdk/thumbnailers-add-subdirectory.patch b/pkgs/desktops/kde-4.10/kdesdk/thumbnailers-add-subdirectory.patch
new file mode 100644
index 00000000000..5b4f7643bf4
--- /dev/null
+++ b/pkgs/desktops/kde-4.10/kdesdk/thumbnailers-add-subdirectory.patch
@@ -0,0 +1,12 @@
+diff -Naur kdesdk-4.10.2-upstream/kdesdk-thumbnailers/CMakeLists.txt kdesdk-4.10.2/kdesdk-thumbnailers/CMakeLists.txt
+--- kdesdk-4.10.2-upstream/kdesdk-thumbnailers/CMakeLists.txt	2013-05-02 21:05:56.446226846 -0430
++++ kdesdk-4.10.2/kdesdk-thumbnailers/CMakeLists.txt	2013-05-02 21:09:58.504053136 -0430
+@@ -9,7 +9,7 @@
+ macro_log_feature(GETTEXTPO_FOUND "gettext-po" "A library for processing PO files" "www.gnu.org/software/gettext" FALSE "" "Required to build the PO thumbnailer")
+ 
+ if(GETTEXTPO_FOUND)
+-macro_optional_add_subdirectory(po_thumbnailer)
++add_subdirectory(po_thumbnailer)
+ endif(GETTEXTPO_FOUND)
+ 
+ macro_display_feature_log()