1 files changed, 5 insertions, 3 deletions
diff --git a/libcxx/test/input.output/stream.buffers/streambuf/streambuf.cons/default.pass.cpp b/libcxx/test/input.output/stream.buffers/streambuf/streambuf.cons/default.pass.cpp
index f8f3b801023..3869c0bcf00 100644
--- a/libcxx/test/input.output/stream.buffers/streambuf/streambuf.cons/default.pass.cpp
+++ b/libcxx/test/input.output/stream.buffers/streambuf/streambuf.cons/default.pass.cpp
@@ -17,6 +17,8 @@
 #include <streambuf>
 #include <cassert>
 
+#include "../../../../platform_support.h" // locale name macros
+
 template <class CharT>
 struct test
     : public std::basic_streambuf<CharT>
@@ -42,13 +44,13 @@ int main()
         test<wchar_t> t;
         assert(t.getloc().name() == "C");
     }
-    std::locale::global(std::locale("en_US.UTF-8"));
+    std::locale::global(std::locale(LOCALE_en_US_UTF_8));
     {
         test<char> t;
-        assert(t.getloc().name() == "en_US.UTF-8");
+        assert(t.getloc().name() == LOCALE_en_US_UTF_8);
     }
     {
         test<wchar_t> t;
-        assert(t.getloc().name() == "en_US.UTF-8");
+        assert(t.getloc().name() == LOCALE_en_US_UTF_8);
     }
 }