diff --git a/include/boost/smart_ptr/detail/yield_k.hpp b/include/boost/smart_ptr/detail/yield_k.hpp
index 403f32f..b4b2057 100644
--- a/include/boost/smart_ptr/detail/yield_k.hpp
+++ b/include/boost/smart_ptr/detail/yield_k.hpp
@@ -25,7 +25,7 @@
 //
 
 #include <boost/config.hpp>
-#include <boost/predef.h>
+#include <boost/predef/platform/windows_runtime.h>
 
 #if BOOST_PLAT_WINDOWS_RUNTIME
 #include <thread>