diff --git a/source/numerics.tex b/source/numerics.tex
index b82cc52b62..31a2e217d6 100644
--- a/source/numerics.tex
+++ b/source/numerics.tex
@@ -16987,7 +16987,7 @@
                          const typename V::value_type& fill_value);
   template<@\exposconcept{simd-mask-type}@ V>
     constexpr V compress(const V& v, const type_identity_t<V>& selector,
-                         const typename M::value_type& fill_value);
+                         const typename V::value_type& fill_value);
 
   template<@\exposconcept{simd-vec-type}@ V>
     constexpr V expand(const V& v, const typename V::mask_type& selector,
@@ -19218,7 +19218,7 @@
                        const typename V::value_type& fill_value);
 template<@\exposconcept{simd-mask-type}@ V>
   constexpr V compress(const V& v, const type_identity_t<V>& selector,
-                       const typename M::value_type& fill_value);
+                       const typename V::value_type& fill_value);
 \end{itemdecl}
 
 \begin{itemdescr}