diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 20f49e41088..de63ca73fc3 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,9 @@
+2011-01-16  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR libstdc++/47323
+	* testsuite/28_regex/08_basic_regex/requirements/constexpr_data.cc:
+	Only test wregex when _GLIBCXX_USE_WCHAR_T is defined.
+
 2011-01-16  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	PR libstdc++/47320
diff --git a/libstdc++-v3/testsuite/28_regex/08_basic_regex/requirements/constexpr_data.cc b/libstdc++-v3/testsuite/28_regex/08_basic_regex/requirements/constexpr_data.cc
index 82d5c6ff4e2..5e6cc2e9f8b 100644
--- a/libstdc++-v3/testsuite/28_regex/08_basic_regex/requirements/constexpr_data.cc
+++ b/libstdc++-v3/testsuite/28_regex/08_basic_regex/requirements/constexpr_data.cc
@@ -1,7 +1,7 @@
 // { dg-do compile }
 // { dg-options "-std=gnu++0x" }
 
-// Copyright (C) 2010 Free Software Foundation, Inc.
+// Copyright (C) 2010, 2011 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
@@ -66,6 +66,8 @@ int main()
 {
   __gnu_test::constexpr_member_data test;
   test.operator()<std::regex>();
+#ifdef _GLIBCXX_USE_WCHAR_T
   test.operator()<std::wregex>();
+#endif
   return 0;
 }