diff --git a/Json5/Json5.cs b/Json5/Json5.cs
index 00a8f48..a6d7142 100644
--- a/Json5/Json5.cs
+++ b/Json5/Json5.cs
@@ -50,7 +50,11 @@ public static string Stringify(Json5Value value, Func<Json5Container, string, Js
 
         public static string Stringify(Json5Value value, Func<string, Json5Value, Json5Value> replacer, string space = null)
         {
-            throw new NotImplementedException();
+            Func<Json5Container, string, Json5Value, Json5Value> finalReplacer = null;
+            if (replacer != null)
+                finalReplacer = (t, k, v) => replacer(k, v);
+
+            return Stringify(value, finalReplacer, space);
         }
 
         public static string Stringify(Json5Value value, Func<string, Json5Value, Json5Value> replacer, int space)