diff --git a/External/AtlasFastJet/CMakeLists.txt b/External/AtlasFastJet/CMakeLists.txt
index 9c2c6eb6f1fa6ffa17c56ae74d4b5cc799277004..acef269c5b925041ae809244a45eadb969cd6583 100644
--- a/External/AtlasFastJet/CMakeLists.txt
+++ b/External/AtlasFastJet/CMakeLists.txt
@@ -1,4 +1,4 @@
-# $Id: CMakeLists.txt 734317 2016-04-06 12:44:04Z krasznaa $
+# $Id: CMakeLists.txt 788623 2016-12-08 14:09:55Z elmsheus $
 #
 # Package building FastJet as part of the offline software build.
 #
@@ -23,19 +23,20 @@ endif()
 # Set up the build of FastJet for the build area:
 ExternalProject_Add( FastJet
    PREFIX ${CMAKE_BINARY_DIR}
-   URL http://fastjet.fr/repo/fastjet-3.2.0.tar.gz
+   URL http://fastjet.fr/repo/fastjet-3.2.1.tar.gz
    INSTALL_DIR ${CMAKE_BINARY_DIR}/${ATLAS_PLATFORM}
    CONFIGURE_COMMAND ./configure
-   --prefix=${CMAKE_CURRENT_BINARY_DIR}/build
-   --enable-shared --disable-static --enable-allplugins ${_fastJetExtraConfig}
+   --prefix=${CMAKE_CURRENT_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/build
+   --enable-shared --disable-static --enable-allcxxplugins
+   ${_fastJetExtraConfig}
    BUILD_IN_SOURCE 1
    BUILD_COMMAND make
    COMMAND make install
    INSTALL_COMMAND ${CMAKE_COMMAND} -E copy_directory
-   ${CMAKE_CURRENT_BINARY_DIR}/build/ <INSTALL_DIR>
-   )
+   ${CMAKE_CURRENT_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/build/ <INSTALL_DIR> )
 add_dependencies( Package_AtlasFastJet FastJet )
 
 # Set up its installation:
-install( DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/build/
-   DESTINATION . USE_SOURCE_PERMISSIONS )
+install( DIRECTORY
+   ${CMAKE_CURRENT_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/build/
+   DESTINATION . USE_SOURCE_PERMISSIONS OPTIONAL )