diff --git a/cmake/PKGBUILD b/cmake/PKGBUILD
index 20e9e1404..791765018 100644
--- a/cmake/PKGBUILD
+++ b/cmake/PKGBUILD
@@ -2,7 +2,7 @@
 
 pkgname=cmake
 pkgver=2.8.10.2
-pkgrel=2
+pkgrel=3
 pkgdesc="A cross-platform open-source make system"
 arch=('x86_64')
 license=('custom')
@@ -10,11 +10,16 @@ url="http://www.cmake.org"
 depends=('curl' 'libarchive>=2.3.1' 'shared-mime-info')
 makedepends=('qt')
 install=${pkgname}.install
-source=("http://www.cmake.org/files/v2.8/${pkgname}-${pkgver}.tar.gz")
-md5sums=('097278785da7182ec0aea8769d06860c')
+source=("http://www.cmake.org/files/v2.8/${pkgname}-${pkgver}.tar.gz"
+        "add_extra_prefix_to_find_paths.patch")
+md5sums=('097278785da7182ec0aea8769d06860c'
+         '1e6575c3c54ecbbbccd64dd94a4192df')
 
 build() {
   cd "${srcdir}"/${pkgname}-${pkgver}
+  
+  # add /extra prefix to find paths
+  patch -Np1 -i ../add_extra_prefix_to_find_paths.patch
 
   ./bootstrap --prefix=/usr \
     --mandir=/share/man \
diff --git a/cmake/add_extra_prefix_to_find_paths.patch b/cmake/add_extra_prefix_to_find_paths.patch
new file mode 100644
index 000000000..c43c811d4
--- /dev/null
+++ b/cmake/add_extra_prefix_to_find_paths.patch
@@ -0,0 +1,12 @@
+diff -Naur cmake-2.8.10.2-orig/Modules/FindGTK2.cmake cmake-2.8.10.2/Modules/FindGTK2.cmake
+--- cmake-2.8.10.2-orig/Modules/FindGTK2.cmake	2012-11-27 14:26:32.000000000 +0100
++++ cmake-2.8.10.2/Modules/FindGTK2.cmake	2013-10-06 10:38:08.368594779 +0200
+@@ -218,6 +218,8 @@
+             /usr/pkg/include/glib
+             $ENV{GTKMM_BASEPATH}/include
+             $ENV{GTKMM_BASEPATH}/lib
++            /extra/usr/include
++            /extra/usr/lib
+             [HKEY_CURRENT_USER\\SOFTWARE\\gtkmm\\2.4;Path]/include
+             [HKEY_CURRENT_USER\\SOFTWARE\\gtkmm\\2.4;Path]/lib
+             [HKEY_LOCAL_MACHINE\\SOFTWARE\\gtkmm\\2.4;Path]/include