diff --git a/include/boost/type_traits/has_trivial_move_assign.hpp b/include/boost/type_traits/has_trivial_move_assign.hpp
index 6d954ab..7b39269 100644
--- a/include/boost/type_traits/has_trivial_move_assign.hpp
+++ b/include/boost/type_traits/has_trivial_move_assign.hpp
@@ -24,7 +24,7 @@
 #endif
 #endif
 
-#if defined(__GNUC__) || defined(__clang)
+#if defined(__GNUC__) || defined(__clang__)
 #include <boost/type_traits/is_assignable.hpp>
 #include <boost/type_traits/is_volatile.hpp>
 #endif
diff --git a/include/boost/type_traits/has_trivial_move_constructor.hpp b/include/boost/type_traits/has_trivial_move_constructor.hpp
index 5784f4b..2ecfc36 100644
--- a/include/boost/type_traits/has_trivial_move_constructor.hpp
+++ b/include/boost/type_traits/has_trivial_move_constructor.hpp
@@ -22,7 +22,7 @@
 #include <boost/type_traits/is_volatile.hpp>
 #endif
 
-#if defined(__GNUC__) || defined(__clang)
+#if defined(__GNUC__) || defined(__clang__)
 #include <boost/type_traits/is_constructible.hpp>
 #include <boost/type_traits/is_volatile.hpp>
 #endif