diff --git a/include/boost/config/stdlib/dinkumware.hpp b/include/boost/config/stdlib/dinkumware.hpp
index b551aca0..5f7a0321 100644
--- a/include/boost/config/stdlib/dinkumware.hpp
+++ b/include/boost/config/stdlib/dinkumware.hpp
@@ -158,7 +158,7 @@
 #endif
 
 // C++17 features
-#elif !defined(_CPPLIB_VER) || (_CPPLIB_VER < 650)
+#if !defined(_CPPLIB_VER) || (_CPPLIB_VER < 650)
 #  define BOOST_NO_CXX17_STD_INVOKE
 #endif