diff --git a/include/nlohmann/detail/meta/type_traits.hpp b/include/nlohmann/detail/meta/type_traits.hpp
index 4ee945cc9..ee028b5d2 100644
--- a/include/nlohmann/detail/meta/type_traits.hpp
+++ b/include/nlohmann/detail/meta/type_traits.hpp
@@ -437,13 +437,13 @@ template<typename T1, typename... Args>
 struct is_constructible_tuple<T1, std::tuple<Args...>> : conjunction<is_constructible<T1, Args>...> {};
 
 // to avoid useless casts (see https://github.com/nlohmann/json/issues/2893#issuecomment-889152324)
-template < typename T, typename U, std::enable_if_t < !std::is_same<T, U>::value, int > = 0 >
+template < typename T, typename U, enable_if_t < !std::is_same<T, U>::value, int > = 0 >
 T conditional_static_cast(U value)
 {
     return static_cast<T>(value);
 }
 
-template<typename T, typename U, std::enable_if_t<std::is_same<T, U>::value, int> = 0>
+template<typename T, typename U, enable_if_t<std::is_same<T, U>::value, int> = 0>
 T conditional_static_cast(U value)
 {
     return value;
diff --git a/single_include/nlohmann/json.hpp b/single_include/nlohmann/json.hpp
index 07c1e1ab4..28ce55292 100644
--- a/single_include/nlohmann/json.hpp
+++ b/single_include/nlohmann/json.hpp
@@ -3837,13 +3837,13 @@ template<typename T1, typename... Args>
 struct is_constructible_tuple<T1, std::tuple<Args...>> : conjunction<is_constructible<T1, Args>...> {};
 
 // to avoid useless casts (see https://github.com/nlohmann/json/issues/2893#issuecomment-889152324)
-template < typename T, typename U, std::enable_if_t < !std::is_same<T, U>::value, int > = 0 >
+template < typename T, typename U, enable_if_t < !std::is_same<T, U>::value, int > = 0 >
 T conditional_static_cast(U value)
 {
     return static_cast<T>(value);
 }
 
-template<typename T, typename U, std::enable_if_t<std::is_same<T, U>::value, int> = 0>
+template<typename T, typename U, enable_if_t<std::is_same<T, U>::value, int> = 0>
 T conditional_static_cast(U value)
 {
     return value;