diff --git a/libstdc++-v3/include/experimental/contract b/libstdc++-v3/include/experimental/contract
index fbf5ed01d8b..8bc12380cec 100644
--- a/libstdc++-v3/include/experimental/contract
+++ b/libstdc++-v3/include/experimental/contract
@@ -39,7 +39,6 @@
 
 namespace std _GLIBCXX_VISIBILITY(default)
 {
-_GLIBCXX_BEGIN_NAMESPACE_VERSION
 
 namespace experimental
 {
@@ -71,7 +70,6 @@ namespace experimental
 
 } // namespace experimental
 
-_GLIBCXX_END_NAMESPACE_VERSION
 } // namespace std
 
 // To override the contract violation handler, define