diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index b5aeb9929d1..20f49e41088 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,9 @@
+2011-01-16  Paolo Carlini  <paolo.carlini@oracle.com>
+
+	PR libstdc++/47320
+	* testsuite/18_support/numeric_limits/lowest.cc:
+	Only test wchar_t when _GLIBCXX_USE_WCHAR_T is defined.
+
 2011-01-16  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	PR libstdc++/47321
diff --git a/libstdc++-v3/testsuite/18_support/numeric_limits/lowest.cc b/libstdc++-v3/testsuite/18_support/numeric_limits/lowest.cc
index 498a03bc0cc..34b603e16ba 100644
--- a/libstdc++-v3/testsuite/18_support/numeric_limits/lowest.cc
+++ b/libstdc++-v3/testsuite/18_support/numeric_limits/lowest.cc
@@ -3,7 +3,7 @@
 
 // 2010-02-25  Ed Smith-Rowland
 
-// Copyright (C) 2010 Free Software Foundation
+// Copyright (C) 2010, 2011 Free Software Foundation
 //
 // 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
@@ -54,7 +54,9 @@ void test01()
   do_test<char>();
   do_test<signed char>();
   do_test<unsigned char>();
+#ifdef _GLIBCXX_USE_WCHAR_T
   do_test<wchar_t>();
+#endif
   do_test<char16_t>();
   do_test<char32_t>();