diff --git a/libcxx/test/support/MinSequenceContainer.h b/libcxx/test/support/MinSequenceContainer.h
index f9e67cd726eb7..55014a117ba8d 100644
--- a/libcxx/test/support/MinSequenceContainer.h
+++ b/libcxx/test/support/MinSequenceContainer.h
@@ -54,6 +54,7 @@ struct MinSequenceContainer {
   TEST_CONSTEXPR_CXX20 const_iterator cbegin() const { return const_iterator(data_.data()); }
   TEST_CONSTEXPR_CXX20 iterator end() { return begin() + size(); }
   TEST_CONSTEXPR_CXX20 const_iterator end() const { return begin() + size(); }
+  TEST_CONSTEXPR_CXX20 const_iterator cend() const { return end(); }
   TEST_CONSTEXPR_CXX20 size_type size() const { return static_cast<size_type>(data_.size()); }
   TEST_CONSTEXPR_CXX20 bool empty() const { return data_.empty(); }