diff --git a/doc/span.qbk b/doc/span.qbk
index 7d8d3e3..e2a1425 100644
--- a/doc/span.qbk
+++ b/doc/span.qbk
@@ -134,14 +134,6 @@ public:
     constexpr const_iterator cend() const noexcept;
     constexpr const_reverse_iterator crbegin() const noexcept;
     constexpr const_reverse_iterator crend() const noexcept;
-
-    friend constexpr iterator begin(span s) noexcept {
-        return s.begin();
-    }
-
-    friend constexpr iterator end(span s) noexcept {
-        return s.end();
-    }
 };
 
 template<class I, class L>
diff --git a/include/boost/core/span.hpp b/include/boost/core/span.hpp
index 54dafdb..cbe8556 100644
--- a/include/boost/core/span.hpp
+++ b/include/boost/core/span.hpp
@@ -347,14 +347,6 @@ public:
         return const_reverse_iterator(s_.p);
     }
 
-    friend constexpr iterator begin(span s) noexcept {
-        return s.begin();
-    }
-
-    friend constexpr iterator end(span s) noexcept {
-        return s.end();
-    }
-
 private:
     detail::span_store<T, E> s_;
 };
diff --git a/test/span_test.cpp b/test/span_test.cpp
index 1009cba..fb05778 100644
--- a/test/span_test.cpp
+++ b/test/span_test.cpp
@@ -362,18 +362,6 @@ void test_crend()
     BOOST_TEST_EQ((boost::span<int>(&a[0], 4).crend().base()), &a[0]);
 }
 
-void test_begin_span()
-{
-    int a[4];
-    BOOST_TEST_EQ((begin(boost::span<int>(&a[0], 4))), &a[0]);
-}
-
-void test_end_span()
-{
-    int a[4];
-    BOOST_TEST_EQ((end(boost::span<int>(&a[0], 4))), &a[4]);
-}
-
 int main()
 {
     test_extent();
@@ -421,8 +409,6 @@ int main()
     test_cend();
     test_crbegin();
     test_crend();
-    test_begin_span();
-    test_end_span();
     return boost::report_errors();
 }
 #else