diff --git a/cmake/libraries/boost.cmake b/cmake/libraries/boost.cmake
index 86e3e02..2be898f 100644
--- a/cmake/libraries/boost.cmake
+++ b/cmake/libraries/boost.cmake
@@ -100,7 +100,7 @@ if(PROJECT_ENABLE_BOOST)
         if (PROJECT_IS_DARWIN)
           set(BOOST_OPTIONS   
             ${BOOST_OPTIONS}
-            define=BOOST_NO_CXX98_FUNCTION_BASE)
+            define=BOOST_NO_CXX98_FUNCTION_BASE
           )
         endif()
       else()