diff --git a/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.get/locale.money.get.members/get_long_double_ru_RU.pass.cpp b/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.get/locale.money.get.members/get_long_double_ru_RU.pass.cpp
--- a/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.get/locale.money.get.members/get_long_double_ru_RU.pass.cpp
+++ b/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.get/locale.money.get.members/get_long_double_ru_RU.pass.cpp
@@ -12,7 +12,6 @@
 // REQUIRES: locale.ru_RU.UTF-8
 
 // XFAIL: glibc-old-ru_RU-decimal-point
-// XFAIL: LIBCXX-AIX-FIXME
 
 // <locale>
 
diff --git a/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.put/locale.money.put.members/put_long_double_ru_RU.pass.cpp b/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.put/locale.money.put.members/put_long_double_ru_RU.pass.cpp
--- a/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.put/locale.money.put.members/put_long_double_ru_RU.pass.cpp
+++ b/libcxx/test/std/localization/locale.categories/category.monetary/locale.money.put/locale.money.put.members/put_long_double_ru_RU.pass.cpp
@@ -12,7 +12,6 @@
 // REQUIRES: locale.ru_RU.UTF-8
 
 // XFAIL: glibc-old-ru_RU-decimal-point
-// XFAIL: LIBCXX-AIX-FIXME
 
 // <locale>
 
diff --git a/libcxx/test/support/locale_helpers.h b/libcxx/test/support/locale_helpers.h
--- a/libcxx/test/support/locale_helpers.h
+++ b/libcxx/test/support/locale_helpers.h
@@ -60,15 +60,15 @@
 }
 
 // GLIBC 2.27 uses U+202F NARROW NO-BREAK SPACE as a thousands separator.
-// FreeBSD and Windows use U+00A0 NO-BREAK SPACE.
+// FreeBSD, AIX and Windows use U+00A0 NO-BREAK SPACE.
 std::wstring convert_thousands_sep_ru_RU(std::wstring const& in) {
 #if defined(TEST_HAS_GLIBC)
   return convert_thousands_sep(in, L'\u202F');
-#elif defined(__FreeBSD__) || defined(_WIN32)
+#  elif defined(__FreeBSD__) || defined(_WIN32) || defined(_AIX)
   return convert_thousands_sep(in, L'\u00A0');
-#else
+#  else
   return in;
-#endif
+#  endif
 }
 
 std::wstring negate_en_US(std::wstring s) {