diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9f0c767f..44c8b6d6 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -79,7 +79,7 @@ set (Chai_INCLUDES include/chaiscript/chaiscript.hpp include/chaiscript/chaiscri
 set_source_files_properties(${Chai_INCLUDES} PROPERTIES HEADER_FILE_ONLY TRUE)
 
 if (MULTITHREAD_SUPPORT_ENABLED)
-  find_package(Boost 1.36.0 COMPONENTS thread)
+  find_package(Boost 1.36.0 COMPONENTS thread system)
 
   if (Boost_FOUND)
     link_directories( ${Boost_LIBRARY_DIRS} )