diff --git a/src/Kook.Net.Rest/Net/Converters/NullableUInt32Converter.cs b/src/Kook.Net.Rest/Net/Converters/NullableUInt32Converter.cs
index 02ad07c1..ef7df4c0 100644
--- a/src/Kook.Net.Rest/Net/Converters/NullableUInt32Converter.cs
+++ b/src/Kook.Net.Rest/Net/Converters/NullableUInt32Converter.cs
@@ -7,10 +7,18 @@ internal class NullableUInt32Converter : JsonConverter<uint?>
 {
     public override uint? Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
     {
-        string value = reader.GetString();
-        return !string.IsNullOrWhiteSpace(value) && uint.TryParse(value, out uint result) 
-            ? result 
-            : null;
+        switch (reader.TokenType)
+        {
+            case JsonTokenType.String:
+                string value = reader.GetString();
+                return !string.IsNullOrWhiteSpace(value) && uint.TryParse(value, out uint result) 
+                    ? result
+                    : null;
+            case JsonTokenType.Number:
+                return reader.GetUInt32();
+            default:
+                throw new JsonException($"{nameof(NullableUInt32Converter)} expects string or number token, but got {reader.TokenType}");
+        }
     }
 
     public override void Write(Utf8JsonWriter writer, uint? value, JsonSerializerOptions options)