diff --git a/src/json.hpp b/src/json.hpp
index e9b621f6..5fab7d25 100644
--- a/src/json.hpp
+++ b/src/json.hpp
@@ -5650,7 +5650,7 @@ class basic_json
     @ref push_back(const typename object_t::value_type&). Otherwise, @a init
     is converted to a JSON value and added using @ref push_back(basic_json&&).
 
-    @param init  an initializer list
+    @param[in] init  an initializer list
 
     @complexity Linear in the size of the initializer list @a init.
 
@@ -6127,13 +6127,17 @@ class basic_json
 
     Compares two JSON values for equality according to the following rules:
     - Two JSON values are equal if (1) they are from the same type and (2)
-      their stored values are the same.
+      their stored values are the same according to their respective
+      `operator==`.
     - Integer and floating-point numbers are automatically converted before
       comparison. Floating-point numbers are compared indirectly: two
       floating-point numbers `f1` and `f2` are considered equal if neither
-      `f1 > f2` nor `f2 > f1` holds.
+      `f1 > f2` nor `f2 > f1` holds. Note than two NaN values are always
+      treated as unequal.
     - Two JSON null values are equal.
 
+    @note NaN values never compare equal to themselves or to other NaN values.
+
     @param[in] lhs  first JSON value to consider
     @param[in] rhs  second JSON value to consider
     @return whether the values @a lhs and @a rhs are equal
diff --git a/test/src/unit-regression.cpp b/test/src/unit-regression.cpp
index df685d2c..d57cb387 100644
--- a/test/src/unit-regression.cpp
+++ b/test/src/unit-regression.cpp
@@ -838,6 +838,14 @@ TEST_CASE("regression tests")
         CHECK(j["double_value"].is_number_float());
     }
 
+    SECTION("issue #464 - VS2017 implicit to std::string conversion fix")
+    {
+        json v = "test";
+        std::string test;
+        test = v;
+        CHECK(v == "test");
+    }
+
     SECTION("issue #465 - roundtrip error while parsing 1000000000000000010E5")
     {
         json j1 = json::parse("1000000000000000010E5");