diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 01156a0cea64..4d282ad2c9df 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,5 +1,7 @@
 2017-04-19  Jonathan Wakely  <jwakely@redhat.com>
 
+	* libsupc++/new: Update comment on #endif directive.
+
 	PR libstdc++/80448
 	* include/experimental/bits/fs_dir.h (directory_iterator)
 	(recursive_directory_iterator): Remove noexcept from defaulted
diff --git a/libstdc++-v3/libsupc++/new b/libstdc++-v3/libsupc++/new
index 2de77525c218..04f172cebd0f 100644
--- a/libstdc++-v3/libsupc++/new
+++ b/libstdc++-v3/libsupc++/new
@@ -209,7 +209,7 @@ namespace std
   void launder(volatile void*) = delete;
   void launder(const volatile void*) = delete;
 }
-#endif // _GLIBCXX_NO_BUILTIN_LAUNDER
+#endif // _GLIBCXX_HAVE_BUILTIN_LAUNDER
 #undef _GLIBCXX_HAVE_BUILTIN_LAUNDER
 #endif // C++17