diff --git a/include/boost/config/compiler/intel.hpp b/include/boost/config/compiler/intel.hpp
index e5fec7b7..f56807db 100644
--- a/include/boost/config/compiler/intel.hpp
+++ b/include/boost/config/compiler/intel.hpp
@@ -46,12 +46,17 @@
 #undef BOOST_GCC_VERSION
 #undef BOOST_GCC_CXX11
 #undef BOOST_GCC
+#undef BOOST_FALLTHROUGH
 
 // Broken in all versions up to 17 (newer versions not tested)
 #if (__INTEL_COMPILER <= 1700) && !defined(BOOST_NO_CXX14_CONSTEXPR)
 #  define BOOST_NO_CXX14_CONSTEXPR
 #endif
 
+#if (__INTEL_COMPILER >= 1800) && (__cplusplus >= 201703)
+#  define BOOST_FALLTHROUGH [[fallthrough]]
+#endif
+
 #endif // defined(_MSC_VER)
 
 #undef BOOST_COMPILER