diff --git a/include/boost/type_index.hpp b/include/boost/type_index.hpp
index be15153..41a1bbf 100644
--- a/include/boost/type_index.hpp
+++ b/include/boost/type_index.hpp
@@ -20,23 +20,6 @@
 # pragma once
 #endif
 
-#if defined(BOOST_NO_CXX11_RVALUE_REFERENCES) || \
-    defined(BOOST_NO_CXX11_AUTO_DECLARATIONS) || \
-    defined(BOOST_NO_CXX11_CONSTEXPR) || \
-    defined(BOOST_NO_CXX11_NULLPTR) || \
-    defined(BOOST_NO_CXX11_NOEXCEPT) || \
-    defined(BOOST_NO_CXX11_DEFAULTED_FUNCTIONS) || \
-    defined(BOOST_NO_CXX11_FINAL) || \
-    defined(BOOST_NO_CXX11_ALIGNOF) || \
-    defined(BOOST_NO_CXX11_STATIC_ASSERT) || \
-    defined(BOOST_NO_CXX11_SMART_PTR) || \
-    defined(BOOST_NO_CXX11_HDR_INITIALIZER_LIST) || \
-    defined(BOOST_NO_CXX11_HDR_TYPE_TRAITS)
-
-#error C++03 support is dropped in Boost.TypeIndex 1.84
-
-#endif
-
 #if defined(BOOST_TYPE_INDEX_USER_TYPEINDEX)
 #   include BOOST_TYPE_INDEX_USER_TYPEINDEX
 #   ifdef BOOST_HAS_PRAGMA_DETECT_MISMATCH