diff --git a/dev-proxy-plugins/MockResponses/MockResponse.cs b/dev-proxy-plugins/MockResponses/MockResponse.cs
index f0dc7d58..e5316a7c 100644
--- a/dev-proxy-plugins/MockResponses/MockResponse.cs
+++ b/dev-proxy-plugins/MockResponses/MockResponse.cs
@@ -10,7 +10,7 @@ public class MockResponse {
     public string Url { get; set; } = string.Empty;
     [JsonPropertyName("method")]
     public string Method { get; set; } = "GET";
-    [JsonPropertyName("nth")]
+    [JsonPropertyName("nth"), JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
     public int? Nth { get; set; }
     [JsonPropertyName("responseCode")]
     public int? ResponseCode { get; set; } = 200;