diff --git a/include/boost/unordered/detail/fca.hpp b/include/boost/unordered/detail/fca.hpp
index a255f29b..6b398070 100644
--- a/include/boost/unordered/detail/fca.hpp
+++ b/include/boost/unordered/detail/fca.hpp
@@ -378,16 +378,8 @@ namespace boost {
 #undef BOOST_UNORDERED_PRIME_FMOD_POSITIONS_ELEMENT
 #undef BOOST_UNORDERED_PRIME_FMOD_SIZES
 #undef BOOST_UNORDERED_PRIME_FMOD_SIZES_64BIT
-#undef BOOST_UNORDERED_PRIME_FMOD_SIZES_34BIT
-#undef BOOST_UNORDERED_PRIME_FMOD_SIZES_34BIT_INCOMPLETE
-
-#ifdef BOOST_UNORDERED_FCA_FASTMOD_SUPPORT
-#undef BOOST_UNORDERED_FCA_FASTMOD_SUPPORT
-#endif
-
-#ifdef BOOST_UNORDERED_FCA_HAS_64B_SIZE_T
-#undef BOOST_UNORDERED_FCA_HAS_64B_SIZE_T
-#endif
+#undef BOOST_UNORDERED_PRIME_FMOD_SIZES_32BIT
+#undef BOOST_UNORDERED_PRIME_FMOD_SIZES_32BIT_INCOMPLETE
 
       template <class ValueType, class VoidPtr> struct node
       {