diff --git a/include/boost/intrusive/detail/workaround.hpp b/include/boost/intrusive/detail/workaround.hpp
index f0cfaf2..e509b00 100644
--- a/include/boost/intrusive/detail/workaround.hpp
+++ b/include/boost/intrusive/detail/workaround.hpp
@@ -48,7 +48,7 @@
 #elif defined(BOOST_MSVC) && defined(_DEBUG)
    //"__forceinline" and MSVC seems to have some bugs in debug mode
    #define BOOST_INTRUSIVE_FORCEINLINE inline
-#elif defined(__GNUC__) && ((__GNUC__ < 4) || (__GNUC__ == 4 && (__GNUC_MINOR__ < 5)))
+#elif defined(BOOST_GCC) && (__GNUC__ <= 5)
    //Older GCCs have problems with forceinline
    #define BOOST_INTRUSIVE_FORCEINLINE inline
 #else