diff --git a/libstdc++-v3/testsuite/27_io/ios_base/types/openmode/case_label.cc b/libstdc++-v3/testsuite/27_io/ios_base/types/openmode/case_label.cc
index 253a0dc7566..e132070bf48 100644
--- a/libstdc++-v3/testsuite/27_io/ios_base/types/openmode/case_label.cc
+++ b/libstdc++-v3/testsuite/27_io/ios_base/types/openmode/case_label.cc
@@ -44,7 +44,7 @@ case_labels(bitmask_type b)
       break;
     case std::ios_base::trunc:
       break;
-#ifdef __glibcxx_ios_noreplace
+#ifdef __cpp_lib_ios_noreplace
     case std::ios_base::noreplace:
       break;
 #endif