diff --git a/absl/base/call_once.h b/absl/base/call_once.h
index 25c783e5f3e039efe37761393b3fe624214798b1..b5fbeae5858cae56309e64dc459f46c0b07fce81 100644
--- a/absl/base/call_once.h
+++ b/absl/base/call_once.h
@@ -43,7 +43,6 @@ namespace absl {
 class once_flag;
 
 namespace base_internal {
-// Implementation detail.
 std::atomic<uint32_t>* ControlWord(absl::once_flag* flag);
 }  // namespace base_internal
 
diff --git a/absl/container/inlined_vector.h b/absl/container/inlined_vector.h
index feba87b58217c14a3538dc257f97d0d92729f037..cb36dc756dfbdb95c50d3219df789682812c3065 100644
--- a/absl/container/inlined_vector.h
+++ b/absl/container/inlined_vector.h
@@ -82,8 +82,7 @@ class InlinedVector {
   using reverse_iterator = std::reverse_iterator<iterator>;
   using const_reverse_iterator = std::reverse_iterator<const_iterator>;
 
-  InlinedVector() noexcept(
-      std::is_nothrow_default_constructible<allocator_type>::value)
+  InlinedVector() noexcept(noexcept(allocator_type()))
       : allocator_and_tag_(allocator_type()) {}
 
   explicit InlinedVector(const allocator_type& alloc) noexcept