diff --git a/CMakeLists.txt b/CMakeLists.txt
index d94f259f9..85984d7e0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -109,7 +109,7 @@ if(CYGWIN OR MSVC OR WIN32)
   set(Boost_USE_STATIC_LIBS 1)
 endif()
 find_package(Boost 1.43 COMPONENTS serialization system filesystem thread date_time regex REQUIRED)
-set(GTSAM_BOOST_LIBRARIES ${Boost_SERIALIZATION_LIBRARY} ${Boost_SYSTEM_LIBRARY})
+set(GTSAM_BOOST_LIBRARIES ${Boost_SERIALIZATION_LIBRARY} ${Boost_SYSTEM_LIBRARY} ${Boost_FILESYSTEM_LIBRARY})
 
 # General build settings
 include_directories(