diff --git a/test/unicode-test.cc b/test/unicode-test.cc
index 73cac58c..63c828dd 100644
--- a/test/unicode-test.cc
+++ b/test/unicode-test.cc
@@ -18,7 +18,7 @@ using testing::Contains;
 TEST(unicode_test, is_utf8) { EXPECT_TRUE(fmt::detail::is_utf8()); }
 
 TEST(unicode_test, legacy_locale) {
-  auto loc = get_locale("ru_RU.CP1251", "Russian.1251");
+  auto loc = get_locale("ru_RU.CP1251", "Russian_Russia.1251");
   if (loc == std::locale::classic()) return;
 
   auto s = std::string();