diff --git a/include/boost/core/quick_exit.hpp b/include/boost/core/quick_exit.hpp
index 40ead1d..ff1bda3 100644
--- a/include/boost/core/quick_exit.hpp
+++ b/include/boost/core/quick_exit.hpp
@@ -33,7 +33,7 @@ extern "C" _Noreturn void quick_exit(int);
 namespace boost
 {
 
-BOOST_NORETURN void quick_exit( int code ) BOOST_NOEXCEPT
+BOOST_NORETURN inline void quick_exit( int code ) BOOST_NOEXCEPT
 {
 #if defined(_MSC_VER) && _MSC_VER < 1900