diff --git a/YD_Event.Application/Scoring/ScoreDisplayService.cs b/YD_Event.Application/Scoring/ScoreDisplayService.cs
index 09eb41e..ae23ef0 100644
--- a/YD_Event.Application/Scoring/ScoreDisplayService.cs
+++ b/YD_Event.Application/Scoring/ScoreDisplayService.cs
@@ -25,7 +25,10 @@ public static class ScoreDisplayService
         if (string.IsNullOrWhiteSpace(calculationJson)) return null;
         try
         {
-            return JObject.Parse(calculationJson)["factors"]?["m"]?.Value<decimal?>();
+            var root = JObject.Parse(calculationJson);
+            return root["factors"] is JObject factors
+                ? factors["m"]?.Value<decimal?>()
+                : null;
         }
         catch (Exception ex) when (ex is JsonException or FormatException or InvalidCastException or OverflowException)
         {