diff --git a/NiL.JS/BaseLibrary/JSON.cs b/NiL.JS/BaseLibrary/JSON.cs
index a1cc5eeb6..04033638f 100644
--- a/NiL.JS/BaseLibrary/JSON.cs
+++ b/NiL.JS/BaseLibrary/JSON.cs
@@ -33,7 +33,7 @@ private class StackFrame
         [ArgumentsCount(2)]
         public static JSValue parse(Arguments args)
         {
-            var length = Tools.JSObjectToInt32(args._iValue);
+            var length = args._iValue;
             var code = args[0].ToString();
             Function reviewer = length > 1 ? args[1]._oValue as Function : null;
             return parse(code, reviewer);
@@ -474,7 +474,7 @@ private static string stringifyImpl(string key, JSValue obj, Function replacer,
                 processed.Add(obj);
 
                 if (obj.Value == null)
-                    return null;
+                    return "null";
 
                 if (obj._valueType == JSValueType.Function)
                     return null;
diff --git a/NiL.JS/Core/JSValue.cs b/NiL.JS/Core/JSValue.cs
index 848b9c859..8efc33108 100644
--- a/NiL.JS/Core/JSValue.cs
+++ b/NiL.JS/Core/JSValue.cs
@@ -862,6 +862,9 @@ private object debugValue()
                 return Value;
             }
 
+            if (Value is null)
+                return "null";
+
             return (_oValue as JSValue ?? this)._valueType;
         }
 
diff --git a/Tests/Fuzz/Bug_282.js b/Tests/Fuzz/Bug_282.js
new file mode 100644
index 000000000..9615860ca
--- /dev/null
+++ b/Tests/Fuzz/Bug_282.js
@@ -0,0 +1,2 @@
+if (JSON.stringify({ a: null }) !== '{"a":null}')
+    console.error("JSON.stringify ignores null");
\ No newline at end of file