diff --git a/source/ranges.tex b/source/ranges.tex
index 24c4f3fde5..a3cfe32dca 100644
--- a/source/ranges.tex
+++ b/source/ranges.tex
@@ -127,7 +127,7 @@
     requires (K == subrange_kind::sized || !@\libconcept{sized_sentinel_for}@<S, I>)
   class subrange;
 
-  template<@\libconcept{input_or_output_iterator}@ I, @\libconcept{sentinel_for}@<I> S, subrange_kind K>
+  template<class I, class S, subrange_kind K>
     inline constexpr bool enable_borrowed_range<subrange<I, S, K>> = true;
 
   // \ref{range.dangling}, dangling iterator handling
@@ -168,7 +168,7 @@
     requires @\exposconcept{weakly-equality-comparable-with}@<W, Bound> && @\libconcept{semiregular}@<W>
   class iota_view;
 
-  template<@\libconcept{weakly_incrementable}@ W, @\libconcept{semiregular}@ Bound>
+  template<class W, class Bound>
     inline constexpr bool enable_borrowed_range<iota_view<W, Bound>> = true;
 
   namespace views { inline constexpr @\unspec@ iota = @\unspec@; }