diff --git a/include/nlohmann/ordered_map.hpp b/include/nlohmann/ordered_map.hpp
index e17b8333a..8f94b088c 100644
--- a/include/nlohmann/ordered_map.hpp
+++ b/include/nlohmann/ordered_map.hpp
@@ -70,8 +70,8 @@ template <class Key, class T, class IgnoredLess = std::less<Key>,
         return *this;
     }
 
-    template < class V, detail::enable_if_t <
-                   detail::is_constructible < T, V&& >::value, int > = 0 >
+    template<class V, detail::enable_if_t<
+                 detail::is_constructible<T, V>::value, int> = 0>
     std::pair<iterator, bool> emplace(const key_type& key, V && t)
     {
         for (auto it = this->begin(); it != this->end(); ++it)
@@ -85,9 +85,9 @@ template <class Key, class T, class IgnoredLess = std::less<Key>,
         return {std::prev(this->end()), true};
     }
 
-    template < class KeyType, class V, detail::enable_if_t <
-                   detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value&&
-                   detail::is_constructible < T, V&& >::value, int > = 0 >
+    template<class KeyType, class V, detail::enable_if_t<
+                 detail::conjunction<detail::is_usable_as_key_type<key_compare, key_type, KeyType>,
+                                     detail::is_constructible<T, V>>::value, int> = 0>
     std::pair<iterator, bool> emplace(KeyType && key, V && t)
     {
         for (auto it = this->begin(); it != this->end(); ++it)
diff --git a/single_include/nlohmann/json.hpp b/single_include/nlohmann/json.hpp
index a6b320e71..8b360c700 100644
--- a/single_include/nlohmann/json.hpp
+++ b/single_include/nlohmann/json.hpp
@@ -25832,8 +25832,8 @@ template <class Key, class T, class IgnoredLess = std::less<Key>,
         return *this;
     }
 
-    template < class V, detail::enable_if_t <
-                   detail::is_constructible < T, V&& >::value, int > = 0 >
+    template<class V, detail::enable_if_t<
+                 detail::is_constructible<T, V>::value, int> = 0>
     std::pair<iterator, bool> emplace(const key_type& key, V && t)
     {
         for (auto it = this->begin(); it != this->end(); ++it)
@@ -25847,9 +25847,9 @@ template <class Key, class T, class IgnoredLess = std::less<Key>,
         return {std::prev(this->end()), true};
     }
 
-    template < class KeyType, class V, detail::enable_if_t <
-                   detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value&&
-                   detail::is_constructible < T, V&& >::value, int > = 0 >
+    template<class KeyType, class V, detail::enable_if_t<
+                 detail::conjunction<detail::is_usable_as_key_type<key_compare, key_type, KeyType>,
+                                     detail::is_constructible<T, V>>::value, int> = 0>
     std::pair<iterator, bool> emplace(KeyType && key, V && t)
     {
         for (auto it = this->begin(); it != this->end(); ++it)