diff --git a/test/std/utilities/function.objects/arithmetic.operations/divides.pass.cpp b/test/std/utilities/function.objects/arithmetic.operations/divides.pass.cpp
index 74298f23..490dc16b 100644
--- a/test/std/utilities/function.objects/arithmetic.operations/divides.pass.cpp
+++ b/test/std/utilities/function.objects/arithmetic.operations/divides.pass.cpp
@@ -19,7 +19,9 @@ int main()
 {
     typedef std::divides<int> F;
     const F f = F();
-    static_assert((std::is_base_of<std::binary_function<int, int, int>, F>::value), "");
+    static_assert((std::is_same<int, F::first_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::second_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::result_type>::value), "" );
     assert(f(36, 4) == 9);
 #if _LIBCPP_STD_VER > 11
     typedef std::divides<> F2;
diff --git a/test/std/utilities/function.objects/arithmetic.operations/minus.pass.cpp b/test/std/utilities/function.objects/arithmetic.operations/minus.pass.cpp
index 9a496a80..9bda541f 100644
--- a/test/std/utilities/function.objects/arithmetic.operations/minus.pass.cpp
+++ b/test/std/utilities/function.objects/arithmetic.operations/minus.pass.cpp
@@ -19,7 +19,9 @@ int main()
 {
     typedef std::minus<int> F;
     const F f = F();
-    static_assert((std::is_base_of<std::binary_function<int, int, int>, F>::value), "");
+    static_assert((std::is_same<int, F::first_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::second_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::result_type>::value), "" );
     assert(f(3, 2) == 1);
 #if _LIBCPP_STD_VER > 11
     typedef std::minus<> F2;
diff --git a/test/std/utilities/function.objects/arithmetic.operations/modulus.pass.cpp b/test/std/utilities/function.objects/arithmetic.operations/modulus.pass.cpp
index 3c178819..ca5bba6d 100644
--- a/test/std/utilities/function.objects/arithmetic.operations/modulus.pass.cpp
+++ b/test/std/utilities/function.objects/arithmetic.operations/modulus.pass.cpp
@@ -19,7 +19,9 @@ int main()
 {
     typedef std::modulus<int> F;
     const F f = F();
-    static_assert((std::is_base_of<std::binary_function<int, int, int>, F>::value), "");
+    static_assert((std::is_same<int, F::first_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::second_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::result_type>::value), "" );
     assert(f(36, 8) == 4);
 #if _LIBCPP_STD_VER > 11
     typedef std::modulus<> F2;
diff --git a/test/std/utilities/function.objects/arithmetic.operations/multiplies.pass.cpp b/test/std/utilities/function.objects/arithmetic.operations/multiplies.pass.cpp
index 97287e6c..f132c8d4 100644
--- a/test/std/utilities/function.objects/arithmetic.operations/multiplies.pass.cpp
+++ b/test/std/utilities/function.objects/arithmetic.operations/multiplies.pass.cpp
@@ -19,7 +19,9 @@ int main()
 {
     typedef std::multiplies<int> F;
     const F f = F();
-    static_assert((std::is_base_of<std::binary_function<int, int, int>, F>::value), "");
+    static_assert((std::is_same<int, F::first_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::second_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::result_type>::value), "" );
     assert(f(3, 2) == 6);
 #if _LIBCPP_STD_VER > 11
     typedef std::multiplies<> F2;
diff --git a/test/std/utilities/function.objects/arithmetic.operations/plus.pass.cpp b/test/std/utilities/function.objects/arithmetic.operations/plus.pass.cpp
index 44001a0e..3c093fc0 100644
--- a/test/std/utilities/function.objects/arithmetic.operations/plus.pass.cpp
+++ b/test/std/utilities/function.objects/arithmetic.operations/plus.pass.cpp
@@ -19,7 +19,9 @@ int main()
 {
     typedef std::plus<int> F;
     const F f = F();
-    static_assert((std::is_base_of<std::binary_function<int, int, int>, F>::value), "");
+    static_assert((std::is_same<int, F::first_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::second_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::result_type>::value), "" );
     assert(f(3, 2) == 5);
 #if _LIBCPP_STD_VER > 11
     typedef std::plus<> F2;
diff --git a/test/std/utilities/function.objects/bitwise.operations/bit_and.pass.cpp b/test/std/utilities/function.objects/bitwise.operations/bit_and.pass.cpp
index 66544781..c0135fad 100644
--- a/test/std/utilities/function.objects/bitwise.operations/bit_and.pass.cpp
+++ b/test/std/utilities/function.objects/bitwise.operations/bit_and.pass.cpp
@@ -19,7 +19,9 @@ int main()
 {
     typedef std::bit_and<int> F;
     const F f = F();
-    static_assert((std::is_base_of<std::binary_function<int, int, int>, F>::value), "");
+    static_assert((std::is_same<int, F::first_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::second_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::result_type>::value), "" );
     assert(f(0xEA95, 0xEA95) == 0xEA95);
     assert(f(0xEA95, 0x58D3) == 0x4891);
     assert(f(0x58D3, 0xEA95) == 0x4891);
diff --git a/test/std/utilities/function.objects/bitwise.operations/bit_or.pass.cpp b/test/std/utilities/function.objects/bitwise.operations/bit_or.pass.cpp
index 6ae3c3ac..cb33df3d 100644
--- a/test/std/utilities/function.objects/bitwise.operations/bit_or.pass.cpp
+++ b/test/std/utilities/function.objects/bitwise.operations/bit_or.pass.cpp
@@ -19,7 +19,9 @@ int main()
 {
     typedef std::bit_or<int> F;
     const F f = F();
-    static_assert((std::is_base_of<std::binary_function<int, int, int>, F>::value), "");
+    static_assert((std::is_same<int, F::first_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::second_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::result_type>::value), "" );
     assert(f(0xEA95, 0xEA95) == 0xEA95);
     assert(f(0xEA95, 0x58D3) == 0xFAD7);
     assert(f(0x58D3, 0xEA95) == 0xFAD7);
diff --git a/test/std/utilities/function.objects/bitwise.operations/bit_xor.pass.cpp b/test/std/utilities/function.objects/bitwise.operations/bit_xor.pass.cpp
index e7bb5e49..d8690aa8 100644
--- a/test/std/utilities/function.objects/bitwise.operations/bit_xor.pass.cpp
+++ b/test/std/utilities/function.objects/bitwise.operations/bit_xor.pass.cpp
@@ -19,7 +19,9 @@ int main()
 {
     typedef std::bit_xor<int> F;
     const F f = F();
-    static_assert((std::is_base_of<std::binary_function<int, int, int>, F>::value), "");
+    static_assert((std::is_same<int, F::first_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::second_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::result_type>::value), "" );
     assert(f(0xEA95, 0xEA95) == 0);
     assert(f(0xEA95, 0x58D3) == 0xB246);
     assert(f(0x58D3, 0xEA95) == 0xB246);
diff --git a/test/std/utilities/function.objects/comparisons/equal_to.pass.cpp b/test/std/utilities/function.objects/comparisons/equal_to.pass.cpp
index 3d1c0b5c..60415ec7 100644
--- a/test/std/utilities/function.objects/comparisons/equal_to.pass.cpp
+++ b/test/std/utilities/function.objects/comparisons/equal_to.pass.cpp
@@ -19,7 +19,9 @@ int main()
 {
     typedef std::equal_to<int> F;
     const F f = F();
-    static_assert((std::is_base_of<std::binary_function<int, int, bool>, F>::value), "");
+    static_assert((std::is_same<int, F::first_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::second_argument_type>::value), "" );
+    static_assert((std::is_same<bool, F::result_type>::value), "" );
     assert(f(36, 36));
     assert(!f(36, 6));
 #if _LIBCPP_STD_VER > 11
diff --git a/test/std/utilities/function.objects/comparisons/greater.pass.cpp b/test/std/utilities/function.objects/comparisons/greater.pass.cpp
index 5a88f436..164f09aa 100644
--- a/test/std/utilities/function.objects/comparisons/greater.pass.cpp
+++ b/test/std/utilities/function.objects/comparisons/greater.pass.cpp
@@ -19,7 +19,9 @@ int main()
 {
     typedef std::greater<int> F;
     const F f = F();
-    static_assert((std::is_base_of<std::binary_function<int, int, bool>, F>::value), "");
+    static_assert((std::is_same<int, F::first_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::second_argument_type>::value), "" );
+    static_assert((std::is_same<bool, F::result_type>::value), "" );
     assert(!f(36, 36));
     assert(f(36, 6));
     assert(!f(6, 36));
diff --git a/test/std/utilities/function.objects/comparisons/greater_equal.pass.cpp b/test/std/utilities/function.objects/comparisons/greater_equal.pass.cpp
index 22444c79..e89c14e2 100644
--- a/test/std/utilities/function.objects/comparisons/greater_equal.pass.cpp
+++ b/test/std/utilities/function.objects/comparisons/greater_equal.pass.cpp
@@ -19,7 +19,9 @@ int main()
 {
     typedef std::greater_equal<int> F;
     const F f = F();
-    static_assert((std::is_base_of<std::binary_function<int, int, bool>, F>::value), "");
+    static_assert((std::is_same<int, F::first_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::second_argument_type>::value), "" );
+    static_assert((std::is_same<bool, F::result_type>::value), "" );
     assert(f(36, 36));
     assert(f(36, 6));
     assert(!f(6, 36));
diff --git a/test/std/utilities/function.objects/comparisons/less_equal.pass.cpp b/test/std/utilities/function.objects/comparisons/less_equal.pass.cpp
index 116906ea..e6ba1f7f 100644
--- a/test/std/utilities/function.objects/comparisons/less_equal.pass.cpp
+++ b/test/std/utilities/function.objects/comparisons/less_equal.pass.cpp
@@ -19,7 +19,9 @@ int main()
 {
     typedef std::less_equal<int> F;
     const F f = F();
-    static_assert((std::is_base_of<std::binary_function<int, int, bool>, F>::value), "");
+    static_assert((std::is_same<int, F::first_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::second_argument_type>::value), "" );
+    static_assert((std::is_same<bool, F::result_type>::value), "" );
     assert(f(36, 36));
     assert(!f(36, 6));
     assert(f(6, 36));
diff --git a/test/std/utilities/function.objects/comparisons/not_equal_to.pass.cpp b/test/std/utilities/function.objects/comparisons/not_equal_to.pass.cpp
index 4b61bf8b..3e710b3e 100644
--- a/test/std/utilities/function.objects/comparisons/not_equal_to.pass.cpp
+++ b/test/std/utilities/function.objects/comparisons/not_equal_to.pass.cpp
@@ -19,7 +19,9 @@ int main()
 {
     typedef std::not_equal_to<int> F;
     const F f = F();
-    static_assert((std::is_base_of<std::binary_function<int, int, bool>, F>::value), "");
+    static_assert((std::is_same<int, F::first_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::second_argument_type>::value), "" );
+    static_assert((std::is_same<bool, F::result_type>::value), "" );
     assert(!f(36, 36));
     assert(f(36, 6));
 #if _LIBCPP_STD_VER > 11
diff --git a/test/std/utilities/function.objects/logical.operations/logical_and.pass.cpp b/test/std/utilities/function.objects/logical.operations/logical_and.pass.cpp
index c7b03cce..72f9dc20 100644
--- a/test/std/utilities/function.objects/logical.operations/logical_and.pass.cpp
+++ b/test/std/utilities/function.objects/logical.operations/logical_and.pass.cpp
@@ -19,7 +19,9 @@ int main()
 {
     typedef std::logical_and<int> F;
     const F f = F();
-    static_assert((std::is_base_of<std::binary_function<int, int, bool>, F>::value), "");
+    static_assert((std::is_same<int, F::first_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::second_argument_type>::value), "" );
+    static_assert((std::is_same<bool, F::result_type>::value), "" );
     assert(f(36, 36));
     assert(!f(36, 0));
     assert(!f(0, 36));
diff --git a/test/std/utilities/function.objects/logical.operations/logical_or.pass.cpp b/test/std/utilities/function.objects/logical.operations/logical_or.pass.cpp
index 8b5420d8..72805044 100644
--- a/test/std/utilities/function.objects/logical.operations/logical_or.pass.cpp
+++ b/test/std/utilities/function.objects/logical.operations/logical_or.pass.cpp
@@ -19,7 +19,9 @@ int main()
 {
     typedef std::logical_or<int> F;
     const F f = F();
-    static_assert((std::is_base_of<std::binary_function<int, int, bool>, F>::value), "");
+    static_assert((std::is_same<int, F::first_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::second_argument_type>::value), "" );
+    static_assert((std::is_same<bool, F::result_type>::value), "" );
     assert(f(36, 36));
     assert(f(36, 0));
     assert(f(0, 36));
diff --git a/test/std/utilities/function.objects/negators/binary_negate.pass.cpp b/test/std/utilities/function.objects/negators/binary_negate.pass.cpp
index e3067083..53ff5b47 100644
--- a/test/std/utilities/function.objects/negators/binary_negate.pass.cpp
+++ b/test/std/utilities/function.objects/negators/binary_negate.pass.cpp
@@ -19,7 +19,9 @@ int main()
 {
     typedef std::binary_negate<std::logical_and<int> > F;
     const F f = F(std::logical_and<int>());
-    static_assert((std::is_base_of<std::binary_function<int, int, bool>, F>::value), "");
+    static_assert((std::is_same<int, F::first_argument_type>::value), "" );
+    static_assert((std::is_same<int, F::second_argument_type>::value), "" );
+    static_assert((std::is_same<bool, F::result_type>::value), "" );
     assert(!f(36, 36));
     assert( f(36, 0));
     assert( f(0, 36));