diff --git a/include/nlohmann/json.hpp b/include/nlohmann/json.hpp
index 702878bf3..a200b55ff 100644
--- a/include/nlohmann/json.hpp
+++ b/include/nlohmann/json.hpp
@@ -2867,9 +2867,6 @@ class basic_json
 
 #ifndef _MSC_VER  // fix for issue #167 operator<< ambiguity under VS2015
                    and not std::is_same<ValueType, std::initializer_list<typename string_t::value_type>>::value
-#endif
-#if defined(JSON_HAS_STRING_VIEW)
-                   and not std::is_same<ValueType, typename std::string_view>::value
 #endif
                    and detail::is_detected<detail::get_template_function, const basic_json_t&, ValueType>::value
                    , int >::type = 0 >
diff --git a/single_include/nlohmann/json.hpp b/single_include/nlohmann/json.hpp
index a3c889fb0..7c57a61bd 100644
--- a/single_include/nlohmann/json.hpp
+++ b/single_include/nlohmann/json.hpp
@@ -15649,9 +15649,6 @@ class basic_json
 
 #ifndef _MSC_VER  // fix for issue #167 operator<< ambiguity under VS2015
                    and not std::is_same<ValueType, std::initializer_list<typename string_t::value_type>>::value
-#endif
-#if defined(JSON_HAS_STRING_VIEW)
-                   and not std::is_same<ValueType, typename std::string_view>::value
 #endif
                    and detail::is_detected<detail::get_template_function, const basic_json_t&, ValueType>::value
                    , int >::type = 0 >
diff --git a/test/src/unit-conversions.cpp b/test/src/unit-conversions.cpp
index 87a7233c1..254aceab4 100644
--- a/test/src/unit-conversions.cpp
+++ b/test/src/unit-conversions.cpp
@@ -51,20 +51,6 @@ using nlohmann::json;
     #include <string_view>
 #endif
 
-template<typename From, typename To>
-struct is_implicitly_convertible
-{
-  private:
-    template <typename C>
-    static std::true_type test(decltype(&C::operator To));
-
-    template <typename C>
-    static std::false_type test(...);
-
-  public:
-    static constexpr bool value = std::is_same<std::true_type, decltype(test<From>(nullptr))>::value;
-};
-
 TEST_CASE("value conversion")
 {
     SECTION("get an object (explicit)")
@@ -494,7 +480,8 @@ TEST_CASE("value conversion")
 #if defined(JSON_HAS_STRING_VIEW)
         SECTION("std::string_view")
         {
-            static_assert(!is_implicitly_convertible<decltype(j), std::string_view>::value);
+            std::string_view s = j;
+            CHECK(json(s) == j);
         }
 #endif