diff --git a/libcxx/include/__ranges/concepts.h b/libcxx/include/__ranges/concepts.h
--- a/libcxx/include/__ranges/concepts.h
+++ b/libcxx/include/__ranges/concepts.h
@@ -80,11 +80,9 @@
     movable<_Tp> &&
     enable_view<_Tp>;
 
-  template<class _Range>
-  concept __simple_view =
-    view<_Range> && range<const _Range> &&
-    same_as<iterator_t<_Range>, iterator_t<const _Range>> &&
-    same_as<sentinel_t<_Range>, iterator_t<const _Range>>;
+  template <class _Range>
+  concept __simple_view = view<_Range> && range<const _Range> &&
+      same_as<iterator_t<_Range>, iterator_t<const _Range>> && same_as<sentinel_t<_Range>, sentinel_t<const _Range>>;
 
   // [range.refinements], other range refinements
   template <class _Rp, class _Tp>